JP3028482B1 - Moving agricultural machinery - Google Patents

Moving agricultural machinery

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Publication number
JP3028482B1
JP3028482B1 JP10357368A JP35736898A JP3028482B1 JP 3028482 B1 JP3028482 B1 JP 3028482B1 JP 10357368 A JP10357368 A JP 10357368A JP 35736898 A JP35736898 A JP 35736898A JP 3028482 B1 JP3028482 B1 JP 3028482B1
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steering
member
operation
speed
turning
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JP2000175546A (en
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茂實 日高
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セイレイ工業株式会社
ヤンマー農機株式会社
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Abstract

【要約】 【課題】 鈍感な旋回フィーリングまたは機敏な旋回フィーリングなど旋回特性の選択を図る。 Abstract: promote the selection of turning characteristic such insensitive turning feeling or agile turning feeling. 【解決手段】 走行変速レバー(73)の操作によって走行速度を無段階に変更自在な変速部材(25)を介して左右走行クローラ(2)に駆動力を伝えると共に、 The A travel speed by the operation of the travel gear lever (73) together with transmitting the driving force to the left and right traveling crawlers (2) through a universal gear shift member (25) steplessly changes,
操向ハンドル(19)によって操向部材(28)を操作して左右走行クローラ(2)の駆動速度の差を無段階に変化させる移動農機において、操向ハンドル(19)の操作量に比例させて車速を減速させる協動系路(17 In mobile agricultural machine to steplessly vary the difference in driving speeds of the left and right traveling crawlers by operating the steering member (28) (2) by the steering wheel (19), in proportion to the operation amount of the steering wheel (19) cooperating pathway for decelerating the vehicle speed Te (17
8)を介して走行変速レバー(73)に変速部材(2 Shifting member traveling shift lever (73) via a 8) (2
5)を連結させると共に、前記協動系路(178)と別の第三系路(179)で走行変速レバー(73)に変速部材(25)を連結させたことを特徴とする。 5) along with linking the, characterized in that by connecting the shift member (25) to the traveling shift lever (73) in the cooperating pathways (178) and another third pathway (179).

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は例えば圃場の穀稈を連続的に刈取って脱穀するコンバインまたは耕耘トラクタまたは圃場管理車などの移動農機に関する。 The present invention relates to relates to mobile agricultural machinery such as combine harvesters or plow tractor or farm management vehicle threshing harvests field of culms continuously, for example.

【0002】 [0002]

【発明が解決しようとする課題】従来、走行変速レバーの操作によって走行速度を無段階に変更自在なベルトまたは油圧無段変速機構を介して左右走行クローラに駆動力を伝えて任意の車速で移動させると共に、操向ハンドルによって操向用の無段変速機構を操作して差動機構を制御し、左右走行クローラの駆動速度の差を無段階に変化させ、走行進路を変更させる技術がある。 THE INVENTION Problems to be Solved] Conventionally, the running speed by operation of the travel gear lever sideways travel crawlers through a universal belt or hydraulic stepless speed change mechanism changes steplessly convey the driving force moving in any vehicle speed together is to control the differential mechanism operates the stepless speed change mechanism for steering by the steering wheel, the difference in driving speeds of the left and right traveling crawlers is changed steplessly, there is a technique for changing the traveling path. しかし乍ら、操向ハンドルの操向操作だけでは直進時と旋回時とで車速が略一定に保たれ、旋回半径が小さいスピンターン動作などを行うときに走行変速レバーにより減速操作を行う必要があり、圃場枕地で方向転換するときに操向ハンドル操作と走行変速レバー操作の両方を行う必要がある。 However 乍Ra, only steering operation of the steering wheel is maintained vehicle speed substantially constant and during turning and straight running, needs to perform a deceleration operation by the travel shift lever when performing such turning radius is small spin turn operation There, it is necessary to perform both the steering wheel controls and the drive shift lever operated to turning in the field pillow areas. そこで、操向ハンドル操作と連動させて車速を自動的に減速させ、かつ直進走行に戻すハンドル操作と連動させて元の車速に自動的に増速させることにより、操向ハンドル操作だけでスピンターン動作などを適正車速に減速させて行え、面倒な走行変速操作を省けるが、スピンターンが不要な作業のときに減速によって作業能率が低下する不具合があると共に、湿田作業のときに減速によって走行性能が低下する不具合がある。 Therefore, in conjunction with a steering handle operated automatically slow down the vehicle speed, and by automatically be increased to in conjunction with the steering back to the straight traveling original speed, spin turn only steering wheel operation can by deceleration and the appropriate vehicle speed, but Habukeru tedious traveling shift operation running, the work efficiency by the reduction when the spin turn is unnecessary work is defective decrease, by the reduction when the Shitsuden work performance but there is a problem to be lowered. また、操向ハンドル操作量に対する車速の減速比を小さくすると、 Also, reducing the speed reduction ratio of the relative steering wheel operation amount,
路上または乾田などで機敏な旋回動作を得られず、特に乾田作業での方向転換(スピンターン)性能が低下する不具合がある。 Not obtained a quick pivoting movement such as street or dry paddy field, particularly turning (spin turn) performance in dry paddy field work is defective decrease.

【0003】 [0003]

【課題を解決するための手段】然るに、本発明は、走行変速レバーの操作によって走行速度を無段階に変更自在な変速部材を介して左右走行クローラに駆動力を伝えると共に、操向ハンドルによって操向部材を操作して左右走行クローラの駆動速度の差を無段階に変化させる移動農機において、操向ハンドルの操作量に比例させて車速を減速させる協動系路を介して走行変速レバーに変速部材を連結させると共に、前記協動系路と別の第三系路で走行変速レバーに変速部材を連結させたもので、前記協動系路と第三系路を使い分けることによって変速部材の制御構造を組み換えることなく旋回性能及び走行性能を変更し得、鈍感な旋回フィーリングまたは機敏な旋回フィーリングなど旋回特性を容易に選択し得るものである。 Means for Solving the Problems] However, the present invention, the running speed by operation of the travel gear lever with transmitting the driving force to the right and left traveling crawlers through a freely shifting member changes steplessly, steering by the steering wheel in mobile agricultural machine for changing the difference in driving speeds of the left and right traveling crawlers by operating the direction member steplessly shift the traveling shift lever through the cooperation system path in proportion to the operation amount of the steering wheel to decelerate the vehicle speed with linking the member, which was ligated the shift member to said cooperating pathway and another third pathway by traveling shift lever, the control of the shifting member by selectively using the cooperating pathway and the third pathway give structure to change the turning performance and driving performance without recombining, in which the turning characteristic such insensitive turning feeling or agile turning feeling can readily select.

【0004】また、協動系路からの減速入力と別の第三系路からの変速操作入力を選択するフィーリング切換部材を設けたもので、協動系路を用いた変速制御と第三系路を用いた変速制御の切換をフィーリング切換部材の操作によって容易に行い得、操舵機能の向上並びに取扱い操作の簡略化などを容易に図り得るものである。 Further, those having a feeling switching member for selecting a speed change operation input from the third pathway deceleration input and another from the cooperating pathways, shift control and the third with cooperating pathways obtained easily perform switching of the shift control using the system path by the operation feeling switching member, it is intended to obtain aim like a facilitates simplification of improving and handling operation of the steering function.

【0005】また、協動系路からの減速入力と別の第三系路からの変速操作入力を同一軸芯上で選択していずれかの入力によって変速部材を制御するように構成したもので、走行変速レバー及び操向ハンドル及び変速部材の間の連結機構の簡略化及びコンパクト化を容易に行い得、組立及び調整など作業性の向上を容易に図り得るものである。 [0005] which was configured to control the transmission member either by inputting the speed change operation input to select on the same axis center from the deceleration input and another third pathway from the cooperating pathways , easily performed to obtain a simplified and compact coupling mechanism between the travel gear lever and steering wheel and the shift member, it is intended to obtain aim to facilitate the improvement of workability and assembly and adjustment.

【0006】また、旋回内側の走行クローラを逆転させるスピンターン旋回走行と、操向ハンドルの最大操作量で旋回内側の走行クローラの回転方向を外側走行クローラと同一方向に維持する非スピンターン旋回走行を、選択切換自在としたもので、スピンターン旋回走行の選択によって路上または乾田などでの旋回を機敏に行わせ得、また非スピンターン旋回走行の選択によって湿田または泥土面などでの旋回性能を向上させ得、旋回特性の切換によって操舵機能の向上並びに取扱い操作性の向上などを容易に図り得るものである。 Further, the spin turn turning reversing the travel crawler inner side of the turning, non spin turn turning maintaining the rotation direction of the turning inner running crawler outward travel crawler in the same direction at the maximum operation amount of the steering wheel the, obtained by freely selecting switch, resulting not agile performed the turning of the like streets or dry paddy field by selecting a spin turn turning, also the turning performance on such Shitsuden or mud surface by selection of the non-spin turn turning the resulting improved, by the switching of the turning characteristic is intended to obtain aim to facilitate and improve and enhance the handling operability of the steering function.

【0007】 [0007]

【発明の実施の形態】以下、本発明の実施例を図面に基づいて詳述する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, described in detail based on the embodiment of the present invention with reference to the drawings. 図1はコンバインの全体側面図、図2 Figure 1 is side view of the entire combine, Figure 2
は同平面図であり、図中(1)は左右一対の走行クローラ(2)を装設するトラックフレーム、(3)は前記トラックフレーム(1)に架設する機台、(4)はフィードチェン(5)を左側に張架し扱胴(6)及び処理胴(7)を内蔵している脱穀部、(8)は刈刃(9)及び穀稈搬送機構(10)などを備える刈取部、(11)は刈取フレーム(12)を介して刈取部(8)を昇降させる油圧シリンダ、(13)は排藁チェン(14)終端を臨ませる排藁処理部、(15)は脱穀部(4)からの穀粒を揚穀筒(16)を介して搬入する穀物タンク、(1 Is a plan view of the same, in FIG. (1) is a track frame that So設 a pair of right and left travel crawlers (2), a machine base that bridged (3) the track frame (1), (4) the feed Cheng (5) stretched on the left side thresher (6) and the processing threshing unit with a built-in cylinder (7), (8) cutting blade (9) and cereal 稈搬 feed mechanism (10) reaper comprising etc. , (11) is a hydraulic cylinder for raising and lowering the frame (12) reaper through (8) cutting, (13) is straw discharge unit for exposing the straw discharge chain (14) end, (15) is threshing section ( grain tank for carrying through AgeKoku tube (16) the grains from 4), (1
7)は前記タンク(15)の穀粒を機外に搬出する排出オーガ、(18)は丸形操向ハンドル(19)及び運転席(20)などを備える運転台、(21)は運転席(2 7) The discharge auger for unloading the grain of the tank (15) to the outside, (18) cab with a like steering wheel 19 and the driver's seat (20), (21) the driver's seat (2
0)下方に設けるエンジンであり、連続的に穀稈を刈取って脱穀するように構成している。 0) an engine provided below, are configured to threshing continuously harvests culms.

【0008】さらに、図3に示す如く、前記走行クローラ(2)を駆動するミッションケース(22)は、1対の第1油圧ポンプ(23)及び第1油圧モータ(24) Furthermore, as shown in FIG. 3, the transmission case (22) that drives the traveling crawler (2), a pair of first hydraulic pump (23) and the first hydraulic motor (24)
を備えて走行主変速用の油圧式無段変速機構を形成する変速部材(25)と、1対の第2油圧ポンプ(26)及び第2油圧モータ(27)を備えて旋回用の油圧式無段変速機構を形成する操向部材(28)とを備え、前記エンジン(21)の出力軸(21a)に第1及び第2油圧ポンプ(23)(26)の入力軸(29a)(29b) And a transmission member which forms a hydraulic continuously variable transmission mechanism for driving the main gear provided with a (25), hydraulic for pivoting comprises a pair of second hydraulic pump (26) and a second hydraulic motor (27) and a steering member (28) which forms a continuously variable transmission mechanism, the input shaft (29a) (29 b of the first and second hydraulic pump to the output shaft of the engine (21) (21a) (23) (26) )
を伝達ベルト(30a)(30b)によって連結させ、 Is connected by a transmission belt (30a) (30b),
前記各油圧ポンプ(23)(26)を駆動するように構成している。 Wherein are configured to drive the hydraulic pumps (23) (26).

【0009】また、前記第1油圧モータ(24)の出力軸(31)に、副変速機構(32)及び差動機構(3 Further, the output shaft (31) of said first hydraulic motor (24), the subtransmission mechanism (32) and the differential mechanism (3
3)を介して左右走行クローラ(2)の各駆動輪(3 3) through the respective left and right drive wheels travel crawlers (2) (3
4)を連動連結させるもので、前記差動機構(33)は左右対称の1対の遊星ギヤ機構(35)(35)を有し、各遊星ギヤ機構(35)は1つのサンギヤ(36) 4) one which interlockingly connected with the differential mechanism (33) is a planetary gear mechanism of a pair of symmetric (35) (having a 35), each planetary gear mechanism (35) is one of the sun gear (36)
と、該サンギヤ(36)の外周で噛合う3つのプラネタリギヤ(37)と、これらプラネタリギヤ(37)に噛合うリングギヤ(38)などで形成している。 When a meshed three planetary gear (37) at the outer periphery of the sun gear (36) are formed in such meshing with these planetary gear (37) ring gear (38).

【0010】前記プラネタリギヤ(37)はサンギヤ軸(39)と同軸線上とのキャリヤ軸(40)のキャリヤ(41)にそれぞれ回転自在に軸支させ、左右のサンギヤ(36)(36)を挾んで左右のキャリヤ(41)を対向配置させると共に、前記リングギヤ(38)は各プラネタリギヤ(37)に噛み合う内歯(38a)を有してサンギヤ軸(39)とは同一軸芯上に配置させ、キャリヤ軸(40)に回転自在に軸支させ、キャリヤ軸(4 [0010] The planetary gear (37) are each rotatably is pivotally supported on a carrier (41) of the carrier shaft of the coaxial line and the sun gear shaft (39) (40), across the left and right of the sun gear (36) (36) left and right of the carrier (41) causes opposed, said ring gear (38) is arranged on the same axis and tooth sun gear shaft has a (38a) (39) among which meshes with the planetary gears (37), the carrier It is rotatably supported by a shaft (40), the carrier shaft (4
0)を延設して車軸を形成して駆動輪(34)を軸支させている。 0) extended to form the axle and is pivotally supported drive wheel (34).

【0011】また、走行用の油圧式無段変速部材(2 Further, HST member for traveling (2
5)は、第1油圧ポンプ(23)の回転斜板の角度変更調節により第1油圧モータ(24)の正逆回転と回転数の制御を行うもので、第1油圧モータ(24)の回転出力を出力軸(31)の伝達ギヤ(42)より各ギヤ(4 5), which performs forward and reverse rotation and the control rotation speed of the first hydraulic motor by changing the angle adjustment of the swash plate of the first hydraulic pump (23) (24), the rotation of the first hydraulic motor (24) each gear from the transmission gear (42) of the output shaft output (31) (4
3)(44)(45)及び副変速機構(32)を介して、サンギヤ軸(39)に固定したセンタギヤ(46) 3) (44) (45) and the subtransmission mechanism via (32), the center gear fixed to the sun gear shaft (39) (46)
に伝達してサンギヤ(36)を回転するように構成している。 Is configured to rotate the sun gear (36) is transmitted to. 前記副変速機構(32)は、前記ギヤ(44)を有する副変速軸(47)と、前記ギヤ(45)を介してセンタギヤ(46)に噛合うギヤ(48)を有する駐車ブレーキ軸(49)とを備え、副変速軸(47)とブレーキ軸(49)間に各1対の低速用ギヤ(50)(5 The subtransmission mechanism (32), said gear sub transmission shaft with (44) and (47), the gear (45) parking brake shaft having a meshing gear (48) to the center gear (46) via (49 ) and comprising a low-speed gear (50 of each pair between sub transmission shaft (47) and the brake shaft (49)) (5
1)・中速用ギヤ(52)(53)・高速用ギヤ(5 1) and medium-speed gear (52) (53) high-speed gear (5
4)(48)を設けて、低中速スライダ(55)及び高速スライダ(56)のスライド操作によって副変速の低速・中速・高速の切換を行うように構成している。 4) (48) and is provided, are configured to perform low-speed, medium speed, high-speed switching of the auxiliary transmission by the sliding operation of the low and medium speed slider (55) and fast slider (56). なお低速・中速間及び中速・高速間には中立を有する。 Incidentally having neutral between slow-between medium speed and medium speed and high speed. また前記ブレーキ軸(49)に駐車ブレーキ(57)を設けると共に、刈取部(8)に回転力を伝達する刈取PTO Also provided with a parking brake (57) on said brake shaft (49), PTO reaper transmits torque to the reaper (8)
軸(58)にギヤ(59)(60)及び一方向クラッチ(61)を介して副変速軸(47)を連結させ、刈取部(8)を車速同調速度で駆動している。 Axis (58) to the gear (59) (60) and through the one-way clutch (61) is connected to the sub transmission shaft (47), it is driven reaper (8) at a vehicle speed tuning speed.

【0012】上記のように、前記センタギヤ(46)を介しサンギヤ軸(39)に伝達された第1油圧モータ(24)からの駆動力を、左右の遊星ギヤ機構(35) [0012] As described above, the driving force from the first hydraulic motor is transmitted to the sun gear shaft (39) through said center gear (46) (24), left and right planetary gear mechanism (35)
を介して左右キャリヤ軸(40)に伝達させると共に、 Together it is transmitted to the left and right carrier shaft (40) via,
左右キャリヤ軸(40)に伝達された回転を左右の駆動輪(34)にそれぞれ伝え、左右走行クローラ(2)を駆動するように構成している。 Convey respectively the rotation transmitted to the left and right carrier shaft (40) to the right and left drive wheels (34), and configured to drive the left and right traveling crawlers (2).

【0013】さらに、旋回用の油圧式無段変速機構で形成する操向部材(28)は、第2油圧ポンプ(26)の回転斜板の角度変更調節により第2油圧モータ(27) Furthermore, the steering member to form a hydraulic continuously variable transmission mechanism for turning (28), the second hydraulic motor by changing the angle adjustment of the swash plate of the second hydraulic pump (26) (27)
の正逆回転と回転数の制御を行うもので、操向出力ブレーキ(62)を有するブレーキ軸(63)と、操向出力クラッチ(64)を有するクラッチ軸(65)と、前記の左右リングギヤ(38)の外歯(38b)に常時噛合させる左右入力ギヤ(66)(67)を設け、第2油圧モータ(27)の出力軸(68)に前記ブレーキ軸(6 Forward and reverse rotation and performs control of the rotational speed, the brake shaft having a steering output brake (62) and (63), a clutch shaft with a steering output clutch (64) and (65), right and left ring gear of said (38) external teeth (38b) lateral input gear for always meshing made (66) (67) provided in the brake shaft to the output shaft of the second hydraulic motor (27) (68) (6
3)及び操向出力クラッチ(64)を介してクラッチ軸(65)を連結させ、クラッチ軸(65)に正転ギヤ(69)を介して右入力ギヤ(67)を連結させ、またクラッチ軸(65)に正転ギヤ(69)及び逆転ギヤ(70)を介して左入力ギヤ(66)を連結させている。 3) and ligated clutch shaft (65) via the steering output clutch (64), the clutch shaft (65) via the forward gear (69) is connected to the right input gear (67), also the clutch shaft (65) in through the forward gear (69) and reverse gear (70) which is connected to the left input gear (66). そして、副変速スライダ(55)(56)の中立によって前記ブレーキ(62)を入にしかつクラッチ(6 Then, the brake (62) the only One to input clutch by neutral auxiliary transmission slider (55) (56) (6
4)を切にする一方、前記中立以外の副変速出力時にブレーキ(62)を切にしかつクラッチ(64)を入にし、右側のリングギヤ(38)の外歯(38b)に正転ギヤ(69)を介してモータ(27)回転力を伝え、また左側のリングギヤ(38)の外歯(38b)に正転ギヤ(69)及び逆転ギヤ(70)を介してモータ(2 4) While the switching of the neutral non-auxiliary speed change output earnestly vital clutch brake (62) at (64) screwed, forward gear with the external teeth (38b) of the right side of the ring gear (38) (69 ) convey motor (27) rotational force through, also motor (2 via the external teeth (forward gear 38b) (69) and reverse gear (70) on the left side of the ring gear (38)
7)回転を伝え、第2油圧モータ(27)を正転(逆転)時、左右同一回転数で、左リングギヤ(38)を逆転(正転)させ、かつ右リングギヤ(38)を正転(逆転)とさせるように構成している。 7) convey rotation when forward a second hydraulic motor (27) (reverse), left and right the same rotational speed, reversing the left ring gear (38) is (forward), and forward the right ring gear (38) ( It is configured so as to be the reverse).

【0014】而して、旋回用の第2油圧モータ(27) [0014] In Thus, the second hydraulic motor for turning (27)
を停止させて左右リングギヤ(38)を静止固定させた状態で、走行用の第1油圧モータ(24)を駆動すると、第1油圧モータ(24)からの回転出力はセンタギヤ(46)から左右のサンギヤ(36)に同一回転数で伝達され、左右遊星ギヤ機構(35)のプラネタリギヤ(37)・キャリヤ(41)を介して左右の走行クローラ(2)が左右同一回転方向で同一回転数によって駆動され、機体の前後方向直進走行が行われる。 In a state where the left and right ring gear is stopped (38) were still fixed to and drives the first hydraulic motor for traveling (24), the rotation output from the first hydraulic motor (24) of the left and right from the center gear (46) are transmitted at the same rotational speed to the sun gear (36), driven by the planetary gear (37) carrier traveling crawlers right through (41) (2) is the same rotation speed in the left-right the same direction of rotation of the left and right planetary gear mechanism (35) is, the front-rear direction straight running of the vehicle body is carried out. 一方、走行用の第1油圧モータ(24)を停止させて左右のサンギヤ(36)を静止固定させた状態で、旋回用の第2油圧モータ(27)を正逆回転駆動すると、左側の遊星ギヤ機構(35)が正或いは逆回転、また右側の遊星ギヤ機構(35)が逆或いは正回転し、左右走行クローラ(2)を逆方向に駆動し、機体を左或いは右に旋回させる。 On the other hand, the first hydraulic motor for traveling (24) is stopped by the left and right of the sun gear (36) are kept stationary fixed, the second hydraulic motor for pivoting (27) for driving forward and reverse rotation, the left planetary gear mechanism (35) is positive or reverse rotation, also the right of the planetary gear mechanism (35) is reverse or forward rotation to drive the right and left traveling crawlers (2) in the reverse direction to pivot fuselage left or right. また、走行用の第1油圧モータ(24)を駆動させながら、旋回用の第2油圧モータ(27)を駆動することにより、機体が左右に旋回して進路が修正されるもので、機体の旋回半径は第2油圧モータ(27)の出力回転数によって決定される。 Further, while driving the first hydraulic motor for traveling (24), by driving the second hydraulic motor for pivoting (27), in which the aircraft is corrected course turning to the right and left, of the aircraft turning radius is determined by the output rotation speed of the second hydraulic motor (27).

【0015】さらに、図2、図4乃至図13に示す如く、前記運転台(18)の前部上面にステアリングコラム(71)を立設固定させ、ステアリングコラム(7 Furthermore, FIG. 2, as shown in FIGS. 4 to 13, a steering column (71) is erected fixed to the front upper surface of the cab (18), steering column (7
1)上面上方側に操向ハンドル(19)を縦軸回りに回転自在に取付けると共に、運転台(18)左側にサイドコラム(72)を設け、サイドコラム(72)下方にミッション(22)を配設させ、主変速レバー(73)、 1) on the upper surface upper side with mounting rotatably steering handle (19) to the vertical axis around the cab (18) side column to the left (72) is provided, the side column (72) Mission (22) downwards is arranged, the main shift lever (73),
副変速レバー(74)、刈取クラッチレバー(75)、 Auxiliary shift lever (74), reaper clutch lever (75),
脱穀クラッチレバー(76)を前記サイドコラム(7 It said threshing clutch lever (76) side column (7
2)に取付ける。 Attached to 2). また、前記ステアリングコラム(7 In addition, the steering column (7
1)は、アルミニウム合金鋳物を成形加工して形成し、 1) is formed by molding an aluminum alloy casting,
左右に分割自在な2つ割れ構造で複数のボルト(77) Two freely divided into right and left crack structure by a plurality of bolts (77)
で締結して箱形に形成している。 It is formed in a box shape in concluded.

【0016】また、前記ステアリングコラム(71)上部にチルト台(78)を一体形成し、チルト台(78) [0016] In addition, the steering column (71) formed integrally with the tilt table (78) at the top, tilt table (78)
に支点ボルト(79)を介してチルトブラケット(8 Through the pivot bolt (79) to the tilt bracket (8
0)を回転自在に軸支させ、チルトレバー(81)によってチルトブラケット(80)を角度調節自在に固定させる。 0) rotatably is pivotally supported to the tilt bracket (80) to angularly adjustably secured by the tilt lever (81). 前記チルトブラケット(80)に軸ケース(8 The shaft case to the tilt bracket (80) (8
2)下部を一体固定させ、コラム(71)上面に固定させる上面カバー(83)上方に軸ケース(82)を延設させ、軸ケース(82)内部に上ハンドル軸(84)を回転自在に軸支させ、上ハンドル軸(84)上端に操向ハンドル(19)を固定させ、チルトレバー(81)操作により支点ボルト(79)回りにハンドル(19)を前後方向に移動調節して一定位置に支持させ、ハンドル(19)取付け位置を前後方向に調節して作業者が操作し易い位置に固定させる。 2) it is integrally fixed to the lower column (71) to extend the shaft casing (82) to the top cover (83) above which is fixed to the upper surface, upper handle shaft (84) rotatably inside in the axial case (82) is pivotally supported on the handle shaft (84) is fixed a steering wheel (19) at the upper end, fixed position moved and adjusted to a handle (19) in the longitudinal direction fulcrum bolt (79) around the tilt lever (81) operation is supported on the handle (19) the operator to adjust the mounting position in the longitudinal direction is fixed to easily position and operation.

【0017】また、前記上ハンドル軸(84)の下端部に自在継手(85)を介して下ハンドル軸(86)上端側を連結させ、下ハンドル軸(86)をステアリングコラム(71)上部に回転自在に軸支させると共に、ステアリングコラム(71)上部に操向入力軸(87)上端部を回転自在に軸支させ、下ハンドル軸(86)のギヤ(88)と操向入力軸(87)のセクタギヤ(89)を噛合させて各軸(86)(87)を連結させ、ステアリングコラム(71)内部の略中央で上下方向に操向入力軸(87)を延設させる。 Further, by connecting the lower handle shaft (86) upper side through a universal joint (85) to the lower end of the upper handle shaft (84), the lower handle shaft (86) the steering column (71) at the top causes rotatably supported, the steering column (71) steering input shaft to the upper (87) upper end portion rotatably is pivotally supported to a steering input shaft gear (88) of the lower handle shaft (86) (87 It is meshed sector gear (89) of) ligated to each axis (86) (87) and, thereby extend the steering input shaft (87) in the vertical direction at a substantially center of the internal steering column (71).

【0018】さらに、前記ステアリングコラム(71) [0018] In addition, the steering column (71)
の左側面で上下幅略中間に軸受部材(90)を着脱自在に固定させ、変速入力軸(91)の一端部を軸受部材(90)にベアリング(92)を介して回転自在に片持ち支持させ、変速入力軸(91)を左右方向に略水平に軸支させると共に、操向入力軸(87)下端に自在継手(93)を介して入力支点軸(94)上端側を連結させ、入力支点軸(94)に操向入力部材(95)を固定させ、変速入力軸(91)に操向入力部材(95)を回転自在に取付けると共に、操向入力部材(95)に入力連結体(96)を着脱自在に固定させ、連係ボルト(9 In the left side detachably to fix the bearing member (90) to the vertical width substantially middle, one end of the transmission input shaft (91) has rotatably piece via a bearing (92) to the bearing member (90) supporting the is, causes journalled substantially horizontally transmission input shaft (91) in the lateral direction, the steering input shaft (87) input fulcrum shaft via a universal joint (93) at the lower end (94) is connected to the upper end side, the input a fulcrum shaft (94) is fixed to the steering input member (95), together with the attached rotatably to the steering input member (95) to the transmission input shaft (91), the input coupling member to the steering input member (95) ( 96) detachably to secure the, linkage bolt (9
7)によって前記操向入力部材(95)と入力連結体(96)を連結させ、また変速入力軸(91)にベアリング(95a)を介して操向入力部材(95)を回転自在に軸支させ、操向入力部材(95)を操向入力軸(8 7) is connected to the steering input member (95) and the input coupling member (96) by, also rotatably supported steering input member (95) to the transmission input shaft (91) via a bearing (95a) is, the steering input shaft steering input member (95) (8
7)回りに回転自在に支持させる。 7) is rotatably supported around. また、前記操向入力軸(87)の正逆転によって操向入力部材(95)を略垂直な入力軸(87)芯線回りに正逆転させると共に、 Further, dissipate reverse rotation substantially perpendicular input shaft (87) wire around the steering input member (95) by forward and reverse rotation of the steering input shaft (87),
前記変速入力軸(91)の正逆転によって略水平な左右方向の入力軸(91)芯線回りに入力支点軸(94)及び操向入力部材(95)を前後方向に傾動させるもので、垂直方向の操向入力軸(87)芯線と左右水平方向の変速入力軸(91)芯線とが直角交叉する交点に自在継手(93)を取付け、操向ハンドル(19)の操向入力軸(87)正逆転操作により操向入力軸(87)芯線回りに操向入力部材(95)と入力連結体(96)を正逆転させる。 Intended to tilt substantially horizontal lateral direction of the input shaft (91) input to the core around the fulcrum shaft (94) and the steering input member (95) in the longitudinal direction by forward and reverse rotation of the transmission input shaft (91), vertical steering input shaft (87) core and the lateral horizontal transmission input shaft (91) attached to the universal joint (93) at the intersection of the core wire and is perpendicular cross, steering input shaft of the steering wheel (19) (87) reverse rotation operation by causing the forward reverse steering input shaft (87) steering input member to the core wire around (95) and the input coupling member (96).

【0019】さらに、前記ステアリングコラム(71) [0019] In addition, the steering column (71)
の下部前側に主変速軸(99)を回転自在に軸支させ、 Rotatably by axially supporting the main transmission shaft (99) to the lower front of,
左右方向に略水平に横架させる主変速軸(99)の左側端をステアリングコラム(71)の左側外方に突設させると共に、サイドコラム(72)下方の機台(3)に回転自在に設ける中介軸(100)に、リンク(101) The main transmission shaft which horizontally extends substantially horizontally in the lateral direction to the left end of (99) causes projecting to the left outside of the steering column (71), rotatably in the side column (72) below the machine frame (3) the Chukai shaft providing (100), the link (101)
(102)並びに長さ調節ターンバックル(103)付きロッド(104)を介して主変速軸(99)を連結させる。 (102) and linking the main transmission shaft (99) via a length-adjustment turnbuckle (103) with the rod (104). また、図4の如く、レバー支点軸(105)を介して機台(3)に回転自在に支点板(106)を取付け、支点板(106)に筒軸(107)を介して主変速レバー(73)基部を左右方向に揺動自在に取付けると共に、支点板(106)にリンク(108)(109) Further, as shown in FIG. 4, rotatably supporting point plate via lever fulcrum shaft (105) to the machine frame (3) attached to (106), the main shift lever through the pivot plate (106) cylinder axis (107) (73) with attached swingably base in the lateral direction, linked to the fulcrum plate (106) (108) (109)
を介して中介軸(100)を連結させ、主変速レバー(73)をレバー支点軸(105)回りに前後方向に揺動させる変速操作によって主変速軸(99)を正逆転させる。 Ligated medium through shaft (100) via the causes forward and reverse main transmission shaft (99) by the speed change operation for swinging in the longitudinal direction main shift lever (73) a lever pivot axis (105) around. また、ロッド形主変速部材(110)及び上連結板(111)及び下リンク(112)を介して変速入力軸(91)に主変速軸(99)を連結させ、主変速レバー(73)の主変速軸(99)正逆転操作により前記操向入力部材(95)を変速入力軸(91)芯線回りに前後に傾動させる。 Also, by connecting the main transmission shaft (99) to the transmission input shaft (91) via a rod shape main transmission member (110) and the upper connecting plate (111) and lower link (112), the main shift lever (73) the steering input member (95) a transmission input shaft (91) is tilted back and forth to the core wire around the main transmission shaft (99) forward and reverse operation.

【0020】さらに、筒軸形の操向出力軸(113)を前記主変速軸(99)に回転自在に取付け、リンク形操向出力部材(114)を操向出力軸(113)に固定させると共に、ロッド形操向結合部材(115)の上端部を前記入力連結体(96)に自在継手形操向入力連結部(116)を介して連結させ、球関継手形操向出力連結部(117)を介して操向結合部材(115)の下端部を操向出力部材(114)に連結させ、走行進路を変更させる操向機構(118)を構成している。 Furthermore, mounting the steering output shaft of the cylindrical shaft form a (113) rotatably to said main transmission shaft (99), to fix the link type steering output member (114) to the steering output shaft (113) together, the universal joint type steering input connector to the input coupling member to an upper end portion (96) of the rod type steering coupling member (115) (116) is connected via a spherical function joint type steering output connection ( 117) through the ligated the lower end of the steering coupling member (115) to the steering output member (114), constitute a steering mechanism (118) for changing the traveling path.

【0021】さらに、前記操向出力軸(113)の上方で該軸(113)と略平行に変速出力軸(119)をステアリングコラム(71)内部に回転自在に軸支させ、 Furthermore, rotatably it is pivotally supported upper shaft (113) and substantially parallel to the transmission output shaft (119) steering column (71) to the inside of the steering output shaft (113),
リンク形変速出力部材(120)を変速出力軸(11 Link-type transmission output member (120) the transmission output shaft (11
9)に固定させると共に、ロッド形変速結合部材(12 Causes fixed to 9), the rod-shaped transmission coupling member (12
1)の上端部を前記入力連結体(96)に自在継手形変速入力連結部(122)を介して連結させ、球関継手形変速出力連結部(123)を介して変速結合部材(12 Is connected via a universal joint type speed change input connection (122) to said input coupling member to an upper end portion of the 1) (96), the transmission coupling member via balls function joint type speed change output connecting portions (123) (12
1)の下端部を変速出力部材(120)に連結させ、走行速度の変更並びに前後進の切換を行う変速機構(12 The lower end of the 1) is connected to the shift output member (120), the speed change mechanism for changing and forward-reverse switching of the running speed (12
4)を構成している。 4) constitute a.

【0022】さらに、互に回転自在な二重軸構造の内側の操向操作軸(125)並びに外側の変速操作軸(12 Furthermore, each other inside the steering operation shaft rotatable double shaft structure (125) as well as outside of the shift operation shaft (12
6)をステアリングコラム(71)の下部後側で左右幅中央の軸受部(127)に回転自在に取付けるもので、 6) intended for mounting rotatably in lateral width center of the bearing portion in the lower rear side of the steering column (71) (127),
長さ調節自在な球関継手軸(128)及び変速リンク(129)(130)を介して前記変速出力軸(11 The length adjustable sphere function joint axis (128) and a transmission link (129) said transmission output shaft via a (130) (11
9)に変速操作軸(126)上端部を連結させると共に、長さ調節自在な球関継手軸(131)及び操向リンク(132)(133)を介して前記操向出力軸(11 With linking the shift operation shaft (126) upper portion 9), the steering output shaft via a length adjustable sphere function joint axis (131) and steering links (132) (133) (11
3)に操向操作軸(125)上端部を連結させる。 3) to link the steering operation shaft (125) upper portion.

【0023】また、前記各操作軸(125)(126) Further, each of the operating shaft (125) (126)
は同一軸芯上に略垂直にステアリングコラム(71)底部に立設させ、各操作軸(125)(126)上端部をステアリングコラム(71)内部に延設させて各出力軸(113)(119)に連結させると共に、ステアリングコラム(71)底面下方に各操作軸(125)(12 Causes the upright in a substantially vertical steering column (71) bottom on the same axis, each operating shaft (125) (126) upper portion of the steering column (71) the output shaft by extending inside (113) ( with linking to 119), steering column (71) each operating shaft to the bottom surface downwardly (125) (12
6)下端部を突設させ、前記運転台(20)の作業者搭乗ステップ(134)下面側に各操作軸(125)(1 6) a lower end portion is projected to the operator boarding step (134) the operating shaft on the lower surface side of the cab (20) (125) (1
26)下端側を延設させるもので、前記変速部材(2 26) intended to extend the lower side, the shift member (2
5)の出力制御軸(135)に車速制御アーム(13 Vehicle speed control arm to the output control shaft (135) of 5) (13
6)を固定させ、ターンバックル(137)付き長さ調節自在車速ロッド(138)及び車速リンク(139) 6) is fixed to, with turnbuckle (137) length adjustable speed rod (138) and a vehicle speed link (139)
を介して前記変速操作軸(126)下端部に車速制御アーム(136)を連結させ、出力制御軸(135)の正逆転操作により第1油圧ポンプ(23)斜板角調節を行って第1油圧モータ(24)の回転数制御及び正逆転切換を行い、走行速度(車速)の無段階変更並びに前後進の切換を行う。 The speed-change operating shaft via a (126) lower portion is connected to the vehicle speed control arm (136), a first hydraulic pump (23) by forward and reverse operation of the output control shaft (135) first performs swash plate angle adjusting It performs rotation speed control and forward-reverse switching hydraulic motor (24), the stepless change and forward-reverse switching of the running speed (vehicle speed). また、前記操向部材(28)の出力制御軸(140)に操向制御アーム(141)を固定させ、 Further, by fixing the steering control arm (141) to said output control shaft of the steering member (28) (140),
ターンバックル(142)付き長さ調節自在旋回ロッド(143)及び旋回リンク(144)を介して操向操作軸(125)下端部に操向制御アーム(141)を連結させ、出力制御軸(140)の正逆転操作により第2油圧ポンプ(26)斜板角調節を行って第2油圧モータ(27)の回転数制御及び正逆転切換を行い、操向角度(旋回半径)の無段階変更並びに左右旋回方向の切替を行う。 Turnbuckle (142) with length adjustable pivot rod (143) and pivot link steering operation shaft via (144) (125) lower portion is connected to the steering control arm (141), the output control shaft (140 It performs rotation speed control and forward-reverse switching of the second hydraulic pump by forward and reverse operation (26) second hydraulic motor performing swash plate angle adjusting (27) the), stepless change and the steering angle (turning radius) perform the switching of the left and right turning direction.

【0024】さらに、前記ステアリングコラム(71) [0024] In addition, the steering column (71)
の右側外面にアクセルレバー(145)を前後方向回転自在に設け、エンジン(21)にアクセルレバー(14 Provided the accelerator lever (145) on the right side outer surface of the freely longitudinal direction rotation, the engine (21) to the accelerator lever (14
5)を連結させるアクセルワイヤ(146)をステアリングコラム(71)前面内側に沿わせて下方から延出させ、アクセルレバー(145)によってエンジン(2 5) The accelerator wire linking (146) along a steering column (71) inside front and by extending from below the engine by the accelerator lever (145) (2
1)回転数を手動調節すると共に、前記ステアリングコラム(71)後面にメンテナンス窓(147)を開設させ、着脱自在な蓋(148)によってメンテナンス窓(147)を閉鎖している。 1) along with the rotational speed to manual adjustment, the steering column (71) rear to open a maintenance window (147), closes the maintenance window (147) by a removable lid (148).

【0025】上記から明らかなように、変速機構(12 [0025] As is apparent from the above, the transmission mechanism (12
4)動作量に比例させて操向機構(118)操向量を変化させるもので、高速側走行変速によって操向量を自動的に拡大させ、かつ低速側走行変速によって操向量を自動的に縮少させ、操向ハンドル(19)の一定量の操作によって走行速度に関係なく左右走行クローラ(2)の旋回半径を略一定に維持させ、農作業走行速度の変更並びに作物列などに機体を沿わせる進路修正などを行わせると共に、逆円錐形の変速機構(124)並びに操向機構(118)を形成し、操向操作によって操向入力軸(87)を回転させて操向入力部材(95)を作動させ、例えば旋回させ乍ら走行速度を減速させる動作を行わせ、変速操作によって変速入力軸(91)を回転させて操向入力部材(95)を作動させ、走行変速による旋回半径の拡大縮少並び 4) in proportion to the operation amount one which changes a steering mechanism (118) steering amount, automatically scaled down steering amount by automatically to enlarge the steering amount by the high-speed side travel gear, and the low-speed side travel gear course not, that to maintain the turning radius of the left and right traveling crawlers (2) irrespective of the travel speed by a fixed amount of operation of the steering wheel (19) substantially constant, thereby the like along the body changes and crop row of agricultural running speed is Fixed with to perform like, to form an inverted conical shape of the transmission mechanism (124) and steering mechanism (118), steering by the countercurrent operation is rotated steering input shaft (87) and the steering input member (95) It is operated, for example, by turning to perform the operation for decelerating the notwithstanding et running speed, by rotating the transmission input shaft (91) by the speed change operation by operating the steering input member (95), expansion contraction of the turning radius according to the traveling speed Sort small 走行変速中立による旋回出力の中止などの操作を行わせる。 To perform operations such as discontinuation of turning output by the running gear neutral.

【0026】また、操向入力部材(95)と操向結合部材(115)を連結させる操向入力連結部(116)を変速入力軸(91)芯線上に配設させ、変速入力部材(96)と変速結合部材(121)を連結させる変速入力連結部(122)を、変速入力軸(91)芯線と交叉する直線(A)上に配設させ、操向入力軸(87)及び変速入力軸(91)を中心とする操向入力部材(95) Further, it is provided to the steering input member (95) and the steering input connector linking the steering coupling member (115) (116) the transmission input shaft (91) on the core line, the speed change input member (96 ) and the shift input connector linking the shift coupling member (121) (122), transmission input shaft (91) is disposed on a straight line (a) crossing the core wire, the steering input shaft (87) and the transmission input axis (91) steering input member around the (95)
の相対的な運動を容易に設定でき、設計及び組立及び構造の簡略化並びに動作の信頼性向上などを図れると共に、変速入力軸(91)芯線と操向入力軸(87)芯線が交叉する軸芯交点(B)を中心とする円周(C)上に、変速入力連結部(122)並びに操向入力連結部(116)を配設させ、操向入力部材(95)などの構造の簡略化及びコンパクト化などを図るもので、変速出力部材(120)と変速結合部材(121)を連結させる変速出力連結部(123)と、操向出力部材(11 Axes of relative motion can easily set, with attained and design and simplicity and more reliable operation of the assembly and construction, the transmission input shaft (91) core and the steering input shaft (87) core wire cross on the circumference (C) centered on the core intersection (B), transmission input connection (122) and steering inputs connecting portion (116) is disposed, simplified structure such as a steering input member (95) It intended to achieve such reduction and compactness, and a transmission output connecting portion for connecting the shift output member (120) and a transmission coupling member (121) (123), the steering output member (11
4)と操向結合部材(115)を連結させる操向出力連結部(117)を、操向入力軸(87)芯線上に配設させ、前進時と後進時の変速切換による逆ハンドル現像を防止し、変速出力部材(120)及び操向出力部材(1 4) and the steering output connecting portion for connecting the steering coupling member (115) to (117), is arranged in the steering input shaft (87) on the core, the opposite handle development with gear shifting during reverse and during forward preventing, transmission output member (120) and the steering output member (1
14)の設計及び組立及び構造の簡略化並びに動作の信頼性向上などを図ると共に、変速入力軸(91)と操向入力軸(87)の軸芯交点(B)に対する変速出力連結部(123)の距離と、操向出力連結部(117)の距離を異ならせ、変速出力連結部(123)と操向出力連結部(117)を同一直線(D)上で離間させることによって各連結部(117)(123)の干渉防止並びに移動範囲の設定などを容易に行え、変速結合部材(12 With achieving such design and simplicity and more reliable operation of the assembly and structure of 14), the speed change output connecting portion with respect to the axis intersection (B) of the transmission input shaft (91) and the steering input shaft (87) (123 the distance), at different distances of the steering output connection (117), each of the connecting portions transmission output connecting portion (123) and the steering output connection (117) by spaced apart on the same straight line (D) (117) (123) preventing interference and setting of the movement range and easy to the speed change coupling member (12
1)及び操向結合部材(115)を狭少場所に設置できるように構成している。 It is configured to be placed 1) and the steering coupling member (115) in the narrow small place.

【0027】また、変速入力連結部(116)と、操向入力連結部(122)を、変速入力軸(91)と操向入力軸(87)の軸芯交点(B)を中心とする円周(C) Further, circle transmission input connecting portion (116), steering inputs connecting portion (122), around the axis intersection of the transmission input shaft (91) and the steering input shaft (87) (B) circumference (C)
上で約90度離間させ、変速入力軸(91)の回転によって操向入力連結部(116)を一定位置に維持させかつ変速入力連結部(122)の変位量を最大にして走行変速を行わせると共に、前記各入力連結部(116) Is separated approximately 90 degrees above perform traveling shift in the maximum displacement amount of is maintained steering inputs connecting portion (116) at a fixed position and transmission input connection (122) by rotation of the transmission input shaft (91) causes the respective input connection (116)
(122)を移動させる平面上に変速入力軸(91)を配置させる構造で各連結部(116)(122)の移動量を容易に確保し、コンパクトで機能的に操向入力部材(95)を配置させるもので、操向入力軸(87)回りに約90度の範囲内で変速入力連結部(122)及び操向入力連結部(116)を移動させ、前後進切換による逆ハンドル現像の防止並びに各入力連結部(116) (122) transmission input shaft on a plane moving (91) the linking parts in a structure in which to place the (116) (122) The amount of movement is easily ensured in a compact, functionally steering input member (95) one which place the moves the steering input shaft (87) shifting input connector in the range of about 90 degrees around (122) and steering input connection (116), the opposite handle development by the forward-reverse switching prevention and each input connection (116)
(122)の移動量の確保と共に、操向入力軸(87) With securing the movement amount of (122), the steering input shaft (87)
を回転させる操向角度に応じて変速入力連結部(12 Transmission input coupling unit in accordance with the steering angle for rotating (12
2)を減速方向に移動させる動作と、旋回内側の走行クローラ(2)を中心に方向転換させるスピンターン動作を容易に行わせ、コンパクトな構造で機能的に構成している。 The operation of moving the 2) in the deceleration direction, not readily perform the spin turn operation diverting around the traveling crawlers inner side of the turning (2), are functionally constituted by a compact structure. また、前記スピンターン動作は、操向部材(2 Further, the spin turn operation, the steering member (2
8)の出力により差動機構(33)を介して左右走行クローラ(2)の一方を正転させかつもう一方を逆転させ、左右走行クローラ(2)の前後及び左右中心点回りに旋回させる動作であり、前後進走行と旋回とが同時に行われて前後進出力である変速部材(25)の回転と旋回出力である操向部材(28)の回転の割合により旋回半径が決定される。 8) outputted by reversing the one and the other is forward of the right and left traveling crawlers (2) through a differential mechanism (33), the operation to pivot back and forth and right and left center point around the right and left traveling crawlers (2) , and the forward-reverse traveling and turning and the turning radius by the ratio of rotation of the steering member (28) is rotated and the turning output of the shift member (25) is a longitudinal expansion force carried out simultaneously is determined. さらに、変速出力軸(119)及び操向出力軸(113)を変速入力軸(91)と略平行に設け、前記各出力軸(113)(119)を複数に分割自在なケースを形成するコラム(71)に高精度で軸支させると共に、変速入力軸(91)並びに前記各出力軸(113)(119)を左右方向に延設させることによって機体前後方向の連結構造を容易に得られ、主変速レバー(73)と変速入力軸(91)の連結、並びに変速部材(25)及び操向部材(28)と前記出力軸(11 Furthermore, it provided the transmission output shaft (119) and steering output shaft (113) substantially parallel to the transmission input shaft (91), to form a split freely case the respective output shaft (113) (119) into a plurality column together is pivotally supported at a high precision (71), easily obtained connection structure of the aircraft longitudinal direction by extending the transmission input shaft (91) and said respective output shaft (113) (119) in the lateral direction, connecting the main shift lever (73) and the transmission input shaft (91), and the shift member (25) and the steering member (28) and said output shaft (11
3)(119)との連結を容易に行え、操作構造の簡略化並びに取扱い性向上などを図れるように構成している。 3) connecting the easy to the (119), is configured so as attained and simplified and handling improvement of the operation structure.

【0028】さらに、図14に示す如く、前記連係ボルト(97)を遊嵌挿通させる位相調節長孔(149)を入力連結体(96)に開設させると共に、操向入力軸(87)芯線を中心とする同一円周上に前記長孔(14 Furthermore, as shown in FIG. 14, causes established in the linkage bolt input coupling member a phase adjusting long hole for loosely inserting the (97) (149) (96), the steering input shaft (87) core the long holes on the same circumference around (14
9)を形成し、変速入力軸(91)をボルト形基準設定部材(98)と中立設定孔(150)の係合によって走行変速中立位置に固定させた状態で、操向入力部材(9 9) is formed, in a state of being fixed to the traveling shift neutral position by the engagement of the transmission input shaft (91) and the bolt-shaped reference setting member (98) to neutral setting hole (150), the steering input member (9
5)だけを回転させ、変速入力軸(91)に対して左右に回転させて操向入力部材(95)の相対位置を修正するもので、操向ハンドル(19)操作によって決定される旋回中立位置と走行速度の中立位置を設定する。 5) Rotate the only rotate to the left and right with respect to the transmission input shaft (91) intended to fix the relative position of the steering input member (95), turning neutral as determined by the steering wheel (19) Operation to set the neutral position of the position and the running speed. また、変速入力軸(91)を基準位置に固定させる基準設定部材(98)を係脱自在に設け、図14に示すボルト止め体(98a)を外し、図15のように基準設定部材(98)先端を中立設定孔(150)に係入させ、走行変速の中立位置並びに操向直進位置を中立設定孔(15 Further, provided disengageably the reference setting member for fixing the transmission input shaft (91) to the reference position (98), remove the bolt member (98a) shown in FIG. 14, the reference setting member (98 as shown in FIG. 15 ) engaged allowed in the neutral setting hole (150) of the tip, travel gear neutral position and the steering straight ahead position neutral setting hole (15
0)と基準設定部材(98)の係合によって確定し、図8及び図11に示すジョイントナット(121a)(1 0) and determined by engagement of the reference setting member (98), the joint nut (121a shown in FIGS. 8 and 11) (1
15a)の螺出入操作により、変速結合部材(121) The screw and out operation 15a), shifting the coupling member (121)
または操向結合部材(115)などの連結長さを伸縮させる組立時の調整などを行い、組立作業性の向上などを図るように構成している。 Or steering coupling member (115) performs such adjustment during assembly extending and retracting the coupling length such, are configured to achieve such improvement in assembly workability.

【0029】さらに、図16乃至図18に示す如く、前記ギヤ(88)は、270度の外周範囲に複数の歯(1 Furthermore, as shown in FIGS. 16 to 18, wherein the gear (88) has a plurality of teeth on an outer peripheral range of 270 degrees (1
51)を形成し、90度の外周範囲を円弧(152)に形成し、操向ハンドル(19)の全回転角度を270度とし、左操向回転または右操向回転の角度を135度に設定し、操向ハンドル(19)回転操作を片手で作業者が容易に行えるように形成する。 51) is formed, the outer peripheral range of 90 degrees to form a circular arc (152), the total rotation angle of the steering wheel (19) and 270 degrees, the angle of HidariMisaoMukai rotation or right steering rotation to 135 degrees set, steering handle (19) the operator rotating the operation with one hand is formed so easily. また、前記セクタギヤ(89)は、130度の外周範囲に複数の歯(153) Further, the sector gear (89) has a plurality of teeth on an outer peripheral range of 130 degrees (153)
を形成し、230度の外周範囲を円弧カム(154)に形成し、前記ギヤ(88)の歯(151)とセクタギヤ(89)の歯(153)を噛合せ、各ギヤ(88)(8 Is formed and the outer peripheral range of 230 degrees to form a circular arc cam (154), the teeth (153) and engagement teeth (151) and sector gear (89) of said gear (88), the gears (88) (8
9)の最大正逆転時、前記円弧(152)両端のストッパ(155)と前記円弧カム(154)両端のストッパ(156)を当接させ、操向ハンドル(19)の回転を規制すると共に、操向入力軸(87)芯線回りに操向入力部材(95)及び入力連結体(96)を65度の範囲で正転または逆転させ、操向入力部材(95)が回転移動する平面上に変速入力軸(91)及び主変速部材(1 The maximum reversals 9), said arc (152) wherein both ends of the stopper (155) arc cam (154) is abutted against the stopper (156) at both ends, while restricting rotation of the steering wheel (19), steering input shaft (87) steering input member to the core wire around (95) and input coupling member (96) is forward or reverse within a range of 65 degrees, in a plane steering input member (95) rotationally moves transmission input shaft (91) and the main shift member (1
10)上端部を配置させる空間を確保し、変速入力軸(91)芯線上に操向入力連結部(116)を設ける構造、並びに同一円周上で前記各入力連結部(116) 10) to secure a space for disposing the upper end portion, transmission input shaft (91) steering input connector onto core provided (116) structure, and each input connector on the same circumference (116)
(122)を90度離間させる構造を容易に得られ、構造のコンパクト化、設計組立の簡略化などを図れるように構成している。 (122) easily obtained a structure for separating 90 degrees, compact structure, is configured so as attained and simplify the design of assembly.

【0030】また、前記セクタギヤ(89)の円弧カム(154)中央に直進ノッチ(157)を形成すると共に、前記ステアリングコラム(71)上面壁にデテント軸(158)を回転自在に軸支させ、デテント軸(15 Further, to form a circular arc cam (154) center straight notch (157) of said sector gear (89) rotatably is pivotally supported detent shaft (158) to said steering column (71) top wall, detent axis (15
8)下端部にデテントアーム(159)を固定させ、デテントアーム(159)にローラ軸(160)を介してデテントローラ(161)を回転自在に軸支させ、前記円弧カム(154)にデテントローラ(161)を当接させ、直進ノッチ(157)に係脱自在にデテントローラ(161)を係合させ、操向ハンドル(19)を直進位置に支持させる。 8) lower portion is fixed detent arm (159), rotatably by axially supporting the detent roller (161) via a roller shaft (160) to the detent arm (159), the detent roller in said arcuate cam (154) (161) is brought into contact with, the straight notch (157) engaged detachably engaged the detent roller (161), is supported in the straight position steering wheel (19). また、前記デテント軸(158)上端側にデテントレバー(162)を固定させ、デテント軸(158)に巻装させる中立バネ(163)の一端をデテントレバー(162)に係止させ、ステアリングコラム(71)の受板(164)に中立バネ(163)の他端を当接させ、円弧カム(154)及び直進ノッチ(157)にデテントローラ(161)を中立バネ(1 Also, the detent shaft (158) upper side to secure the detent lever (162), one end to engage with the detent lever (162) of the neutral spring to be wound around a detent shaft (158) (163), steering column ( a receiving plate (164) of 71) is brought into contact with the other end of the neutral spring (163), an arc cam (154) and the detent roller in the straight notches (157) to (161) neutral spring (1
63)によって弾圧当接させている。 And by oppression contact by 63). また、操向ハンドル(19)の直進位置をオンオフ切換によって電気的に検出するマイクロスイッチ型直進センサ(165)をデテントレバー(162)に取付けている。 Also attached to the detent lever microswitch type linear sensor (165) for electrically detecting the off switching the straight-ahead position of the steering wheel (19) (162).

【0031】さらに、図12、図13に示す如く、前記旋回ロッド(143)中間部に伸縮ダンパ(166)を設けるもので、一方のロッド(143)端部に固定させるバネケース(167)と、他方のロッド(143)端部に摺動自在に係止させるバネ座(168)(169) Furthermore, FIG. 12, as shown in FIG. 13, the pivot rod (143) intended to provide a telescopic damper to the intermediate portion (166), and the spring case (167) to be fixed to one of the rod (143) ends, other rod (143) spring seat for slidably engaged in an end portion (168) (169)
と、バネ座(168)(169)を介して圧縮状態にロッド(143)に巻装させる圧縮バネ(170)を、前記ダンパ(166)に備え、操向ハンドル(19)の操向操作による押し方向と引き方向の双方向で前記ロッド(143)に一定以上の押引力が作用したとき、即ち、 If, spring seat and (168) a compression spring which is wound on the rod (143) in compression through (169) (170), provided in the damper (166), according to the steering operation of the steering wheel (19) when more than a predetermined push and pull force to the rod (143) in a direction the pulling direction of the double push is applied, i.e.,
操向ハンドル(19)の切角116度(85パーセント)操作により、操向制御アーム(141)が最高出力位置に移動したとき、前記バネ(170)が圧縮してロッド(143)を伸縮させ、第2油圧ポンプ(26)を最高出力維持した状態で操向ハンドル(19)をさらに旋回方向に回転操作させ、操向ハンドル(19)を切角116度から切角135度まで操作するように構成している。 The steering turning angle 116 degrees steering wheel (19) (85%) operation, when the steering control arm (141) is moved to the maximum output position, extend and retract the rod (143) by said spring (170) compresses further in the turning direction to rotate the steering wheel (19) in a state where the second hydraulic pump (26) and maximum output retention, to operate the steering wheel (19) to the turning angle 135 degrees from the turning angle 116 degrees It is configured to.

【0032】さらに、図12、図19、図20に示す如く、前記車速制御アーム(136)にピン(171)を固定させ、前記ピン(171)を摺動自在に貫挿させる長孔(172)を前記車速ロッド(138)端部に形成し、車速ロッド(138)を車速制御アーム(136) Furthermore, FIG. 12, FIG. 19, as shown in FIG. 20, the vehicle speed control arm (136) to secure the pin (171), long holes which inserted through the pin (171) slidably (172 ) the vehicle speed rod (138) is formed on the end portion, the vehicle speed rod (138) the vehicle speed control arm (136)
に長孔(172)及びピン(171)を介して連結させると共に、車速制御アーム(136)と同軸上にデテントカム(173)を固定させ、前記カム(173)にデテントローラ(174)をバネ(175)によって弾圧させ、前記カム(173)とローラ(174)によって車速制御アーム(136)を中立位置に自動的に復動させ、前記アーム(136)の中立支持によって第1油圧モータ(24)を停止維持し、かつ前記アーム(13 The causes connected via a long hole (172) and pins (171), a vehicle speed control arm (136) is fixed to Detentokamu (173) coaxially, the cam detent roller (173) (174) springs ( is repression by 175), said cam (173) and roller (174) automatically moved backward to the neutral position of the vehicle speed control arm (136) by a first hydraulic motor by a neutral support of the arm (136) (24) the stop maintenance and the arm (13
6)が中立で主変速レバー(73)が中立操作位置のときに前記長孔(172)の長手方向の略中央にピン(1 6) in the longitudinal direction approximately center the pins of the slot when the main shift lever (73) is a neutral operation position in a neutral (172) (1
71)を位置させ、前記ロッド(138)の押引による前後進変速の両方に略等しいストロークがピン(17 71) is positioned a substantially equal strokes both before reverse speed by push pull of the rod (138) is a pin (17
1)に対して形成され、前後進変速の両方で前記アーム(136)が略対称(正逆転)動作を行うように構成している。 Formed for 1), said arms both before reverse speed (136) is configured to perform substantially symmetric (normal and reverse rotation) operation.

【0033】そして、図20に示すように、中立位置(O)の主変速レバー(73)を変速操作して不感帯ゾーン(P)を移動させて変速開始位置(Q)に移動させることにより、車速ロッド(138)の押引によって長孔(172)の長手方向端部にピン(171)が当接し、主変速レバー(73)と車速制御アーム(136) [0033] Then, as shown in FIG. 20, by moving the shift start position by moving the neutral position dead zone zone by shifting operation of the main shift lever (73) in (O) (P) (Q), longitudinal end to the pin (171) abuts, the vehicle speed control arm main shift lever (73) of the push-pull by the long hole of the vehicle speed rod (138) (172) (136)
が連結させると共に、主変速レバー(73)をさらに変速操作して変速ゾーン(R)を移動させて変速部材(2 Shift member (2 but with linking, the main speed change lever (73) a further shift operation to move the shift zone (R)
5)の最高出力位置(S)までの間に傾倒支持させることにより、中立位置(T)の車速制御アーム(136) Maximum output position of 5) (by tilting the support until S), the vehicle speed control arm in the neutral position (T) (136)
を最高出力位置(S)までの変速ゾーン(R)に主変速レバー(73)操作量に比例させて移動させ、変速部材(25)の第1油圧モータ(24)を無段階に変速出力させ、左右走行クローラ(2)を等速度で同一方向に駆動して前後進させるように構成している。 The maximum output position (S) main shift lever (73) to the shift zone (R) to be moved in proportion to the operation amount causes a first hydraulic motor of the shift member (25) (24) are shift output steplessly , it is configured to forward and backward by driving in the same direction horizontally traveling crawlers (2) at a constant speed.

【0034】さらに、図14、図21、図22に示す如く、前記軸受部(90)に切欠(176)を設けて凹部(177)を形成し、操向ハンドル(19)を左旋回最大切角(135度)操作したとき、変速入力連結部(1 Furthermore, FIG 14, FIG 21, as shown in FIG. 22, a recess (177) is provided a notch (176) to the bearing portion (90), left turn most valued steering wheel (19) angle (135 degrees) when operated, shifting the input connection (1
22)及び変速結合部材(121)を前記凹部(17 22) and the recess of the shift coupling member (121) (17
7)に入り込ませ、前記連結部(122)が軸受部(9 Intruded 7), the connecting portion (122) of the bearing portion (9
0)に当接する構造に比べ、操向ハンドル(19)を左右旋回操作したときの最大車速減速率を大きく形成するもので、操向ハンドル(19)の直進位置(U)を中心に、連係ボルト(97)が位相調節孔(149)縁に当接するまでの間に定速ゾーン(V)が形成され、操向ハンドル(19)の切角15度以内の操向操作によって機体中心速度を略一定に保って進路を修正する。 0) in comparison with the abutting structure, one that larger the maximum vehicle speed deceleration rate when the left and right turn control the steering wheel (19), around the straight-ahead position of the steering wheel (19) (U), linked bolts (97) are constant-speed zone (V) is formed between until it abuts against the phase adjusting holes (149) edges, the body center velocity by the steering wheel (19) turning angle of 15 degrees within the steering operation modifying the path kept substantially constant. また、操向ハンドル(19)をさらに操向操作して旋回ゾーン(W)を移動させて操向部材(28)の最高出力位置(X)までの操向ハンドル(19)切角116殿間で回転させることにより、操向ハンドル(19)回転角度に比例して操向制御アーム(141)を最高出力位置(X)までの間で移動させ、操向部材(28)の第2油圧モータ(27)を無段階に変速出力させ、左右走行クローラ(2)の速度差を無段階に変更させると共に、操向ハンドル(19)回転角度に比例して車速ロッド(1 Further, the steering handle (19) further between maximum output position (X) to the steering wheel (19) turning angle 116 builders steering operation to swivel the zone (W) to move the by steering members (28) by rotating in, in proportion to the steering wheel (19) rotation angle to move between the steering control arm (141) to a maximum output position (X), the second hydraulic motor of the steering member (28) (27) and shift the output steplessly, the speed difference between the right and left travel crawlers (2) with changing steplessly speed rod (1 in proportion to the steering wheel (19) rotation angle
38)及び車速制御アーム(136)を変速中立方向に復動させ、左右走行クローラ(2)の走行速度を無段階に減速させ、操向ハンドル(19)切角を大きくすることにより、旋回半径が小さくなり、走行速度が遅くなり、左右旋回動作が行われる。 38) and moved backward vehicle speed control arm (136) to the transmission-neutral direction, the traveling speed of the left and right traveling crawlers (2) is decelerated steplessly, by increasing the steering wheel (19) turning angle, the turning radius is reduced, the traveling speed is slower, left and right turning operation is performed. また、切角116度の操向ハンドル(19)をさらに操向操作してスピンターンゾーン(Y)内を切角135度の最大操向位置(Z)までの間に回転させることにより、ダンパ(166)の伸縮吸収動作によって旋回ロッド(143)(連結長さ) Further, by rotating until the maximum steering position of the switching angle 135 degrees in the spin turn zone (Y) and further steering operating the turning angle 116 degrees of the steering wheel (19) (Z), the damper pivot rod by the flexible absorbing operation (166) (143) (connection length)
を伸縮させ、操向制御アーム(141)を最高出力位置(X)に維持した状態で、車速ロッド(138)及び車速制御アーム(136)をさらに変速中立方向に復動させ、左右走行クローラ(2)の左右幅中間に形成される旋回中心回りに方向転換するスピンターン動作が行われるように構成している。 To extend and retract the, while maintaining the steering control arm (141) to the maximum output position (X), further moved backward to shift the neutral direction speed rod (138) and a vehicle speed control arm (136), right and left travel crawlers ( spin turn operation for turning the turning center around which is formed on the lateral width intermediate 2) is configured to be performed.

【0035】また、図19、図20、図22のように、 Further, 19, 20, as shown in FIG. 22,
車速ロッド(138)と車速制御アーム(136)を長孔(172)によって連結させ、主変速レバー(73) The vehicle speed rod (138) and the vehicle speed control arm (136) is connected by long holes (172), the main shift lever (73)
の変速操作ストローク(L)を実変速ストロークよりも大きく形成すると共に、変速入力連結部(122)の左旋回方向に設ける軸受部(90)に凹部(177)を形成して前記連結部(122)を凹部(177)に出入させ、主変速レバー(73)最大出力操作時に操向ハンドル(19)最大切角(135度)で車速減速率を25パーセントに設定し、前記変速機構(124)によって減速率を40パーセントまで下げたのに対し、さらに減速率を上げて25パーセントまで減速させ、スピンターン動作を行わせ、圃場枕地で機体を約180度方向転換させて次の未刈り穀稈刈取り工程に移動させるように構成している。 Shift operation stroke (L) as well as larger than the actual gear stroke, the connecting portion to form a recess (177) to the bearing portion (90) provided in the leftward turning direction of the transmission input connection (122) (122 ) was and from the recess (177), the main shift lever (73) at the maximum power the steering wheel (19) most important angle during operation (135 degrees) to set the speed reduction ratio to 25%, the speed change mechanism (124) by contrast lowering the deceleration rate to 40 percent, it is decelerated further to 25 percent by increasing the deceleration ratio, to perform the spin turn operation, the aircraft in the field pillow locations approximately 180 degrees by turning the next not cutting grain It is configured to move in 稈刈 up process. なお、図22のように、主変速レバー(7 Incidentally, as shown in FIG. 22, the main shift lever (7
3)最大出力時、操向ハンドル(19)の切角116度でダンパ(166)が作動して操向部材(28)が最高出力維持されると、操向ハンドル(19)の切角116 3) at the maximum output, when the steering member is operated damper (166) is at the switching angle 116 degrees of the steering wheel (19) (28) is maximum output retention, turning angle of the steering wheel (19) 116
度乃至135度の範囲で左右走行クローラ(2)の減速率が略等しく保たれるもので、操向ハンドル(19)の切角116度の位置で左右走行クローラ(2)速度差が最大となり、操向ハンドル(19)の切角116度乃至135度の範囲で、左右走行クローラ(2)の速度差が略一定に維持され、走行速度がハンドル(19)切角に比例して減速される。 But time to the deceleration rate of the right and left traveling crawlers in a range of 135 degrees (2) is substantially equal maintained, the left and right traveling crawlers position of the switching angle 116 degrees of the steering wheel (19) (2) speed difference becomes maximum in the range of turning angle 116 degrees to 135 degrees of the steering wheel (19), the speed difference between the left and right traveling crawlers (2) is kept substantially constant, the traveling speed is decelerated in proportion to the turning angle handle (19) that.

【0036】また、操向ハンドル(19)による車速制御アーム(136)の減速動作量を多くして減速率を大きく形成し、スピンターン動作に必要な減速率を容易に得られて圃場枕地での方向転換機能の向上などを図るもので、車速制御アーム(136)と車速ロッド(13 Further, by increasing the deceleration of the vehicle speed control arm (136) by the steering wheel (19) increases to form a deceleration rate, field pillow areas are easily obtained a deceleration rate required to spin turn operation intended to achieve such improvement in turning features, the vehicle speed control arm (136) and the vehicle speed rod (13
8)を長孔(172)とピン(171)によって連結させ、長孔(172)及びピン(171)の大きさによって車速ロッド(138)の操作量または車速制御アーム(136)の減速動作量などを容易に決定でき、変速部材(25)及び操向部材(28)の出力特性並びに操向ハンドル(19)の減速制御動作などの考慮を容易に行え、車速ロッド(138)取付け構造の簡略化、並びに組立作業など取扱い性向上、並びに製造コストの低減などを図れるように構成している。 8) was connected by long holes (172) and the pin (171), long holes (172) and pin (deceleration amount of the operation amount or the vehicle speed control arm of the vehicle speed rod (138) by the size of 171) (136) etc. can easily determine, considerations such as shift member (25) and the steering member (28) of the output characteristics, as well as steer deceleration control operation of the handle (19) easy to, simplified vehicle speed rod (138) attachment structure reduction, as well as assembly work, such as handling property improvement, and is configured so as attained reduce such manufacturing cost.

【0037】さらに、前記主変速レバー(73)の不感帯ゾーン(P)の操作によって前記入力部材(95) Furthermore, the input member by the operation of the dead zone zone (P) of the main speed change lever (73) (95)
(96)を変速入力軸(91)回りに中立位置(P)から変速開始位置(Q)に移行させ、操向ハンドル(1 (96) was transferred to the shift start position from the transmission input shaft (91) around the neutral position (P) (Q), the steering wheel (1
9)の直進位置を中心とする定速ゾーン(V)でのハンドル(19)切角に対する操向制御アーム(141)の動作比を大きくし、主変速レバー(73)を変速ゾーン(R)に移行させて微速走行させたとき、操向ハンドル(19)の定速ゾーン(V)での操作で、操向制御アーム(141)の動作量を多くし、操向部材(28)の第2油圧ポンプ(26)の回転変化率をハンドル(19) Handle at a constant speed zone (V) around the straight-ahead position of 9) (19) to increase the operation ratio of the steering control arm (141) for turning angle, the main shift lever (73) the shift zone (R) by transition when brought into a very low speed running, the operation in the constant speed zone (V) of the steering wheel (19), to increase the operation amount of the steering control arm (141), the steering member (28) first the rotation change rate of the second hydraulic pump (26) the handle (19)
切角変化に対して大きくし、第2油圧ポンプ(26)の微速出力での旋回動作時間を短縮し、前記モータ(2 Increased relative turning angle change, to reduce the turning operation time at very low speed output of the second hydraulic pump (26), said motor (2
7)微速出力域で旋回動作が行われるのを阻止し、主変速レバー(73)微速走行状態での操向ハンドル(1 7) prevents the fine speed output range by turning operation is performed, the main shift lever (73) the steering wheel in a very low speed running state (1
9)による旋回動作が第2油圧ポンプ(26)出力を一定以上大きくして行われるように構成している。 9) pivoting operation by is configured to be performed by increasing the second hydraulic pump (26) or constant output. このように、第2油圧ポンプ(26)の微速回転出力での旋回動作を防ぐことにより、第2油圧ポンプ(26)が微速出力域で低効率であっても、第2油圧ポンプ(26)の出力を一定以上確保して旋回動作を行わせることができる。 Thus, by preventing the turning operation at a very low speed rotational output of the second hydraulic pump (26), a second hydraulic pump (26) even with low efficiency in a very low speed output range, the second hydraulic pump (26) it is the output of that to perform a turning operation to ensure certain level. また、主変速レバー(73)の変速操作により、操向ハンドル(19)による操向部材(28)の制御が一定以上の旋回力を確保して開始されるように設定した後、走行変速動作を遅れて開始させ、微速移動時の操向部材(28)の旋回力不足を防止し得、操向部材(2 Further, the shifting operation of the main shift lever (73), after setting so that the control of the steering member by the steering wheel (19) (28) is started to secure a certain level or more turning force, travel gear operation the delay is started, resulting prevent turning force deficit steering member at the time of slow-speed movement (28), the steering member (2
8)など製造コストの低減並びに左右走行クローラ(2)の旋回性能向上などを図るもので、主変速レバー(73)の操作により、変速入力軸(91)芯線回りに操向及び変速入力部材(95)(96)を一定角度回転させた後、各入力部材(95)(96)が変速部材(2 8) intended to achieve such reduction in manufacturing cost, and the like, as well as cornering performance improvement of the right and left traveling crawlers (2), by operating the main shift lever (73), transmission input shaft (91) steered to the core wire around and transmission input member ( 95) (96) the after a certain angle, the input member (95) (96) speed change member (2
5)に連結されて変速部材(25)を作動させ、変速操作によって各入力部材(95)(96)を操向動作状態に移動させた後で変速部材(25)から出力させて走行クローラ(2)を駆動するから、走行出力が小さい微速移動時でも、操向ハンドル(19)の操向操作による操向部材(28)の制御量を多くして必要な旋回力を確保し、微速移動時の旋回性能の向上などを図れるように構成している。 5) to be connected to actuate the shift member (25), running the crawler by output from the shift member (25) by shifting operation after moving the respective input member (95) (96) to the steering operation state ( since driving the 2), the running output even when a small very low speed moving, to ensure the necessary swirl forces by increasing the control amount of the steering member (28) by steering operation of the steering wheel (19), a very low speed moving is configured so as attained and improvement of turning performance at the time.

【0038】そして、前記主変速レバー(73)が中立のとき、操向ハンドル(19)の正転(逆転)操作により、操向入力軸(87)芯線回りに前記各入力部材(9 [0038] Then, when the main speed change lever (73) is neutral, the forward (reverse) operation of the steering wheel (19), the steering input shaft (87) wherein the core wire around each input member (9
5)(96)及び各結合部材(115)(121)が円錐軌跡上で移動し、前記各出力部材(114)(12 5) (96) and each coupling member (115) (121) moves on a conical locus, each output member (114) (12
0)及び各出力軸(113)(119)が停止した状態が維持される。 0) and the output shaft (113) (119) is maintained stopped state. また、主変速レバー(73)を前方(後方)に倒す前進(後進)操作により、前記各入力部材(95)(96)が変速入力軸(91)芯線回りに前方(後方)に傾き、操向入力連結部(116)が一定位置に停止した状態を維持し乍ら、変速入力連結部(12 The main by the shift lever (73) forward to defeat forward (backward) (reverse) operation, the inclination to the each input member (95) (96) of transmission input shaft (91) forward to the core wire around (rear), Misao maintaining the state counter input connection (116) is stopped at a predetermined position 乍Ra, transmission input connection (12
2)を上方(下方)に移動させ、変速出力部材(12 Move the 2) above (below), the speed change output member (12
0)の上方(下方)揺動によって変速出力軸(119) Upper 0) (lower) shift by swinging the output shaft (119)
を正転(逆転)させ、変速部材(23)の第1油圧ポンプ(23)の斜板角切換によって第1油圧モータ(2 The rotated forward (reverse), the first hydraulic motor by a swash plate Tsunokiri conversion of the first hydraulic pump of the transmission member (23) (23) (2
4)を正転(逆転)させ、第1油圧モータ(24)の出力軸(31)の正転(逆転)によって左右走行クローラ(2)を前進(後進)駆動する。 4) is rotated forward (reverse) the forward left and right traveling crawlers (2) by forward (reverse) of the output shaft of the first hydraulic motor (24) (31) (reverse) drive. また、主変速レバー(73)の倒し角に比例して出力軸(31)の回転数が変化し、走行クローラ(2)の前進(後進)速度が無段階に変速される。 The rotational speed of the main shift lever (73) the output shaft in proportion to the angle defeat of (31) is changed, the forward (reverse) velocity of the traveling crawlers (2) is steplessly.

【0039】さらに、主変速レバー(73)を前方(後方)に倒して前進(後進)操作を行っている状態下で、 [0039] In addition, in a state that is doing the main shift lever (73) Tilt forward (backward) forward (backward) operation,
操向ハンドル(19)を左方向(右方向)に回転させることにより、変速入力軸(91)芯線回りに操向入力部材(95)が前方(後方)に傾いた姿勢で操向入力軸(87)芯線回りに正転(逆転)し、操向入力連結部(116)が下方(上方)に移動し、操向出力部材(1 By rotating the steering wheel (19) to the left (right), transmission input shaft (91) steering input member to the core wire around (95) forward (backward) the inclined steering input shaft in position ( 87) and forward (reverse) to the core wire around steering input connector (116) moves downward (upward), the steering output member (1
14)の下方(上方)揺動によって操向出力軸(11 Lower 14) (upper) steering output shaft by the swinging (11
3)を正転(逆転)させ、操向部材(28)の第2油圧ポンプ(26)の斜板角切換によって第2油圧モータ(27)を正転(逆転)させ、第2油圧モータ(27) 3) is rotated forward (reverse), and the second hydraulic motor by the swash plate Tsunokiri conversion (27) is rotated forward (reverse) of the second hydraulic pump steering member (28) (26), a second hydraulic motor ( 27)
の出力軸(68)の正転(逆転)により、左走行クローラ(2)を減速(増速)させ、かつ右走行クローラ(2)を増速(減速)させ、左方向(右方向)に機体を旋回させて左方向(右方向)に進路を修正する。 The forward rotation of the output shaft (68) (reverse), decelerating the left travel crawlers (2) is (accelerated), and the right travel crawlers (2) is accelerated (decelerated) to the left (right) by pivoting the body to correct the path to the left (right). また、 Also,
前記の進路修正動作と同時に、操向ハンドル(19)の左方向(右方向)回転により、変速入力軸(91)芯線回りに変速入力部材(96)が前方(後方)に傾いた状態で操向入力軸(87)芯線回りに正転(逆転)し、変速入力連結部(122)が下方(上方)に移動し、変速出力部材(120)の下方(上方)揺動によって変速出力軸(119)を逆転(正転)させ、変速部材(25) Simultaneously with said path modification operation, steering state by the left (right) rotation, the transmission input shaft (91) wire around the transmission input member (96) is inclined to the front (rear) of the steering wheel (19) and toward the input shaft (87) forward to the core wire around (reverse) to move the shift input connector (122) downward (upward), the speed change output member (120) of the lower (upper) shift by swinging the output shaft ( 119) reverse (forward) is the shift member (25)
を中立方向に戻す制御を行って出力軸(31)の回転数を低下させ、走行速度(車速)を減速させる。 Reducing the rotational speed of the output shaft performs control of returning to the neutral direction (31) and to decelerate the running speed (vehicle speed). このように、走行移動中の操向ハンドル(19)の左右操向操作により、操向ハンドル(19)の回転角度に比例して、 Thus, the right and left steering operation of the steering wheel during traveling movement (19), in proportion to the rotation angle of the steering wheel (19),
進路を修正する旋回半径(角度)と、走行速度の減速量が変化し、操向ハンドル(19)を大きく回転させることによって左右走行クローラ(2)の速度差を大きくして旋回半径を小さくすると同時に、走行速度の減速量が多くなって車速が遅くなると共に、前進時と後進時とでは、操向ハンドル(19)の回転に対して旋回入力連結部(116)の動きを逆方向にし、前後進の何れにおいても操向ハンドル(19)の回動操作方向と機体の旋回方向とを一致させ、回転操作する丸形の操向ハンドル(19)の回転操作によって例えばトラクタまたは田植機など四輪自動車と同様の運転感覚で進路修正及び方向転換などを行う。 And the turning radius to correct the course (angle), the deceleration of the running speed is changed, reducing the speed difference is increased to the turning radius of the left and right traveling crawlers (2) by rotating a large steering wheel (19) at the same time, the deceleration of the running speed with the vehicle speed becomes much slower, the time of forward and reverse time, turning the input coupling portion with respect to the rotation of the steering wheel (19) movement (116) in the opposite direction, It is matched with the turning direction of the turning operation direction and the body of the steering wheel (19) in either forward and backward, such as a rotating operation, for example, by tractor or rice transplanter round of the steering wheel rotation-operating (19) 4 performing like course modifications and turning in the same operation feeling and wheel car.

【0040】さらに、図22は機体の左右旋回時における操向ハンドル(19)の切れ角と左右走行クローラ(2)の速度の関係を示すもので、ハンドル(19)の切れ角が大となる程左右走行クローラ(2)の速度差は大となると共に、左右走行クローラ(2)の平均速度となる機体中心速度も副変速レバー(74)の走行速度(高速・標準・低速)状態に応じて減速される。 [0040] Furthermore, Figure 22 shows the speed relationship of the cutting angle and the right traveling crawlers (2) of the steering wheel (19) at the left and right turning of the machine body, handle angle (19) is large extent speed difference between the left and right traveling crawlers (2) together with becomes large, fuselage center speed as the average speed of the left and right traveling crawlers (2) according to the running speed (high speed, standard and low speed) state of the sub-shift lever (74) It is decelerated Te. 直進位置の操向ハンドル(19)を左方向(右方向)に約15 About 15 of the straight-ahead position the steering wheel (19) to the left (right)
度回転させる刈取り進路修正範囲では、操向入力部材(95)の回転に対して変速入力連結部(122)が略接線方向に移動し、変速出力部材(120)が直進と略同一位置に維持されると共に、操向部材(28)の第2 The course correction range mowing for degree rotation, transmission input connecting portion with respect to the rotation of the steering input member (95) (122) moves in a substantially tangential direction, maintaining the shift output member (120) is rectilinear and substantially the same position with the second steering member (28)
油圧ポンプ(26)によって第2油圧モータ(27)を正転(逆転)させる操向出力によって左方向(右方向) Left by steering output second hydraulic motor (27) is rotated forward (reverse) by the hydraulic pump (26) (right)
に旋回させ、未刈り穀稈(作物)列の湾曲に合せる進路修正を行う。 To pivot, it performed the course modifications to match the curvature of the non-cutting culms (crops) column. このとき、旋回内側の走行クローラ(2) At this time, the inside of the turn of the traveling crawlers (2)
の減速量と、旋回外側の走行クローラ(2)の増速量が略等しくなり、機体中心速度が直進と略同一速度に保たれる。 And deceleration amount, accelerating amount of a traveling crawler turning outer (2) is substantially equal, fuselage center velocity is kept straight and substantially the same speed. また、操向ハンドル(19)を直進位置から15 Also, 15 the steering handle (19) from the straight position
度以上回転させると、操向入力部材(95)の回転によって変速結合部材(121)が押引動作され、変速出力部材(120)が左旋回及び右旋回のいずれでも減速動作し、第1油圧ポンプ(23)及びモータ(24)の走行変速出力を減速させ、左右走行クローラ(2)(2) Rotating or more degrees, shift coupling member by rotation of the steering input member (95) (121) is push-pull operation, speed change output member (120) is decelerated operation either left turn and right turn, first the traveling speed change output of the hydraulic pump (23) and motor (24) is decelerated, the right and left traveling crawlers (2) (2)
を同一方向に回転駆動させて前進(または後進)させ、 The advanced by driven to rotate in the same direction (or reverse),
左右走行クローラ(2)(2)の走行速度差により左方向(右方向)に旋回するブレーキターン動作を行わせ、 The running speed difference between the left and right traveling crawlers (2) (2) to perform the braking turning operation for turning to the left (right),
未刈り穀稈(作物)列から外れたときに元の列に戻したり隣の列に移動させる進路修正を行う。 The course modified to move next to the column or returned to the original column when disengaged from the non-cutting culms (crops) column performed. さらに、操向ハンドル(19)を約116度回転させると、ダンパ(1 Furthermore, rotating about 116 degrees steering wheel (19), the damper (1
66)が作動して旋回出力が最高出力維持され、135 66) turning output operates is best output retention, 135
度の切角範囲で機体中心速度が直進時の約4分の1に減速され、旋回内側の走行クローラ(2)が逆転駆動され、左右走行クローラ(2)の間の旋回中心回りに機体が旋回するスピンターン動作が行われ、左右走行クローラ(2)の左右幅だけ旋回方向にずらせて機体を180 Aircraft central rate switching angle range of degrees is reduced to about a quarter of during straight traveling crawlers inner side of the turning (2) is reversely driven, the fuselage turning center around between the left and right traveling crawlers (2) spin turn operation is performed to swivel, 180 airframe to be shifted only in the turning direction lateral width of the left and right traveling crawlers (2)
度方向転換させるもので、ハンドル切角0度からハンドル切角135度の範囲で操向ハンドル(19)を回転させて左または右方向の旋回操作を行い、直進位置を中心とした左右15度のハンドル(19)回転範囲で未刈り穀稈(作物)列に沿って移動する条合せ進路修正を、直進時の走行速度を維持し乍ら行うと共に、左右116度乃至135度のハンドル(19)回転により、旋回部材(28)を最高出力維持し乍ら、圃場枕地で機体を方向転換させて次作業工程に移動させるスピンターン動作を、直進時の約4分の1の走行速度(減速率25パーセント)に自動的に減速して行う。 One which degree turning handle turning angle by rotating the steering wheel (19) in the range of 0 degrees of the steering wheel turning angle 135 degrees performs the turning operation of the left or right direction, the right and left 15 ° around the straight-ahead position handle (19) the strip combined route modifications that moves along the non-cutting culms (crops) column rotation range, performs maintaining the running speed during straight notwithstanding et al, left 116 degrees to 135 degrees of the handle (19 ) by the rotation, the pivot member (28) and maximum output maintain 乍Ra, a diverting the aircraft in the field pillow areas with spin turn operation of moving to the next operation step, the first running speed of approximately 4 minutes during straight ( carried out automatically deceleration in deceleration 25% rate).

【0041】さらに、副変速を標準(秒速1.5メートル)速度に保ち、操向ハンドル(19)を90度回転させたとき、主変速レバー(68)操作により主変速出力を高速及び3分の2及び3分の1に変更しても、機体の旋回半径が略一定に保たれた状態で、旋回速度(機体中心速度)だけを変化させる。 [0041] In addition, keeping the auxiliary transmission standard (per second 1.5 m) speed, when the steering wheel (19) is rotated 90 degrees, the main speed change lever (68) Fast and third main shift output by the operation changing one of 2 and 3 minutes, in a state where the turning radius of the aircraft is kept substantially constant, varying only the turning speed (vehicle body center speed). また、直進位置を基準として連係ボルト(97)と位相調節孔(149)の設定範囲で第1油圧ポンプ(23)及び第1油圧モータ(2 Further, linkage bolt relative to the straight-ahead position (97) and phase adjusting holes first hydraulic pump (23) in a set range of (149) and the first hydraulic motor (2
4)を直進状態に維持させ、農作業中に作物列または畦などに機体を沿わせる操向操作を行っても走行速度が不均一に変化するのを防止し、略同一走行速度を保ち乍ら農作業中の進路修正を行え、作業者の運転感覚と機体の走行動作とを略一致させて適正な操向操作を行える。 4) is maintained in the straight state, even running speed performed steering operation be along the body such as the crop rows or ridge is prevented from nonuniformly varying during agricultural work, notwithstanding et maintaining substantially the same traveling speed performing a course modification in farming, perform an appropriate steering operation substantially aligned with the running operation of the operator's driving sense and fuselage. また、主変速レバー(73)の変速基準値を切換える副変速レバー(74)副変速操作の低速及び標準及び高速切換に比例させて旋回半径を小径乃至大径に変化させ、第1油圧ポンプ(23)及びモータ(24)と走行クローラ(2)間の減速比並びに第2油圧ポンプ(26)及びモータ(27)と走行クローラ(2)間の減速比の設定、或いはスピンターン動作に必要な小半径旋回に必要な走行駆動力の確保などを図ると共に、同一副変速操作位置で主変速レバー(73)を操作することによって旋回半径を略一定に保った状態で旋回時の走行速度を変化させる。 Further, the main shift lever (73) the auxiliary shift lever (74) turning radius in proportion to the low-speed and standard and high-speed switching of the auxiliary transmission operation for switching the shift reference value is changed to a small diameter or large diameter, the first hydraulic pump ( 23) and motor (24) and the running crawlers (2) reduction ratio and the second hydraulic pump (26 between) and the motor (27) and the running crawlers (2) setting the reduction ratio between, or required to spin turn operation there is ensured the ensuring of the driving force required for the small radius turns, changing the traveling speed during a turn while maintaining the turning radius substantially constant by operating the main shift lever (73) in the same subtransmission operating position make.

【0042】さらに、図11、図23、図24に示す如く、前記変速出力軸(119)に筒形の減速出力軸(1 [0042] Further, FIGS. 11, 23, as shown in FIG. 24, the transmission output shaft (119) to the cylindrical deceleration output shaft (1
78)と直結出力軸(179)を回転自在に軸支させ、 78) and rotatably by axially supporting the direct output shaft (179),
減速出力軸(178)に変速出力部材(120)を固定させ、また変速出力軸(119)にボス(180)を介して変速リンク(129)を固定させると共に、前記主変速軸(99)にボス(181)を介して直結入力リンク(182)を固定させ、前記直結出力軸(179)に直結出力リンク(183)を固定させ、入力リンク(1 Decelerating the output shaft (178) to thereby fix the shift output member (120), also causes through the boss (180) to the transmission output shaft (119) fixed to the shift link (129), said main transmission shaft (99) via a boss (181) is fixed to direct input link (182), to secure the direct output link (183) to said direct output shaft (179), the input link (1
82)の軸(184)に設けるローラ(185)を出力リンク(183)の長孔(186)に摺動自在に嵌入させ、各リンク(182)(183)を介して主変速軸(99)に直結出力軸(179)を連結させ、各軸(9 82) is fitted slidably into the long hole (186) of the axis of (184) rollers provided on (185) the output link (183), each link (182) (183) via a main transmission shaft (99) ligated to direct the output shaft (179), each shaft (9
9)(179)を連動回転させる。 9) interlocking rotating (179).

【0043】また、前記変速出力軸(119)の中空にクラッチ軸(187)を出入自在に挿入させ、変速出力軸(119)に係止させるクラッチピン(188)をクラッチ軸(187)挿入端部に固定させると共に、前記クラッチピン(188)を係脱自在に係止させるノッチ(189)(190)を前記減速出力軸(178)及び直結出力軸(179)に夫々形成し、クラッチ軸(18 [0043] Further, hollow and out freely by inserting the clutch shaft (187) of the transmission output shaft (119), the clutch pin engaged to the transmission output shaft (119) (188) a clutch shaft (187) insertion end together is fixed to the section, the clutch pin notches disengageably to freely engaged with (188) (189) the reduction output shaft (190) (178) and respectively formed to direct the output shaft (179), clutch shaft ( 18
7)出入操作によりクラッチピン(188)及びノッチ(189)(190)を介して減速出力軸(178)または直結出力軸(179)のいずれか一方を変速出力軸(119)に択一的に連結させる。 7) alternatively to the clutch pin (188) and notch by and out operation (189) (190) reduction output shaft via a (178) or transmission output shaft either the direct output shaft (179) (119) It is linked. また、バネ(19 In addition, a spring (19
1)によって位置決めボール(192)を係脱自在に係入させる位置決め溝(193)(194)を前記クラッチ軸(187)に設け、前記ボール(192)と各溝(193)(194)のいずれかの係止によって各出力軸(178)(179)の各ノッチ(189)(19 Positioning grooves which make engaged to disengageably positioning ball (192) by 1) a (193) (194) provided on the clutch shaft (187), both said ball (192) of each groove (193) (194) each notch of the output shafts by Kano locking (178) (179) (189) (19
0)のいずれかにクラッチピン(188)を係合維持させると共に、前記ステアリングコラム(71)の外側でステップ(134)上の作業者が操作可能にフィーリングレバー(195)を取付け、該レバー(195)を前記クラッチ軸(187)に連結させ、前記レバー(19 Either 0) with to maintain engagement of the clutch pin (188), outwardly mounted to the step (134) on the worker operably feeling lever (195) of said steering column (71), the lever (195) was connected to the clutch shaft (187), said lever (19
5)操作によってクラッチ軸(187)を切換え、変速出力部材(120)からの変速入力と出力リンク(18 5) switching the clutch shaft (187) by the operation, the transmission input from the shift output member (120) output link (18
3)からの変速入力のいずれかによって変速リンク(1 Transmission link by any of the transmit input from 3) (1
29)を作動させ、操向ハンドル(19)の操作量に比例させて車速を減速させる変速入力と、主変速レバー(73)の操作量に基づく変速入力のいずれかにより、 29) is operated and a gear shift input to decelerate the vehicle speed in proportion to the operation amount of the steering wheel (19), by any of the transmission input based on an operation amount of the main shift lever (73),
変速部材(25)を変速制御する。 Shifting controls the gear member (25).

【0044】上記から明らかなように、主変速レバー(73)からの変速操作出力を主変速軸(99)で2つに分け、一方の出力をハンドル(19)角度に応じた車速減速出力として出力部材(120)から変速出力軸(119)上の減速出力軸(178)を介して変速リンク(129)に伝え、もう一方の出力を出力リンク(1 As is apparent from the above, the main transmission shift operation output from the lever (73) is divided into two in the main transmission shaft (99), the vehicle speed reduction output corresponding one of the output to the handle (19) angle the output member (120) via transmission output shaft (119) on the reduction output shaft (178) transmitted to the speed change link (129) from the other output an output link (1
83)から変速出力軸(119)上の直結出力軸(17 83) from the transmission output shaft (119) on the direct output shaft (17
9)を介して変速リンク(129)に伝え、前記の2つの変速出力を変速出力軸(119)上で選択していずれか一方によって第1油圧ポンプ(23)を変速制御するもので、走行変速レバーである主変速レバー(73)の操作によって走行速度を無段階に変更自在な変速部材(25)を介して左右走行クローラ(2)に駆動力を伝えると共に、操向ハンドル(19)によって操向部材(28)を操作して左右走行クローラ(2)の駆動速度の差を無段階に変化させる移動農機において、操向ハンドル(19)の操作量に比例させて車速を減速させる協動系路である減速出力軸(178)を介して主変速レバー(73)に変速部材(25)を連結させると共に、前記減速出力軸(178)と別の第三系路である直結出力軸(179)で主変速 Transmitted to the shift link (129) through 9), intended to shift control of the first hydraulic pump by either (23) the two shift output of said selected on the transmission output shaft (119), running with transmitting the driving force to the shift lever and is main shift lever (73) right and left traveling crawlers running speed via a universal gear shift member continuously changed (25) by operation of (2), the steering wheel (19) in mobile agricultural machine for changing the difference in driving speed steplessly right and left traveling crawlers by operating the steering member (28) (2), cooperating to decelerate the vehicle speed in proportion to the operation amount of the steering wheel (19) system path in a reduction output shaft with linking the shift member (25) to the main shift lever (73) via (178), the reduction output shaft (178) and another third pathway is a direct output shaft ( the main transmission 179) バー(73)に変速部材(2 Shifting the bar (73) member (2
5)を連結させ、前記減速出力軸(178)と直結出力軸(179)を使い分けることによって変速部材(2 5) is connected to the shift member by selectively using the reduction output shaft (178) directly connected output shaft (179) (2
5)の制御構造を組み換えることなく旋回性能及び走行性能を変更し、鈍感な旋回フィーリングまたは機敏な旋回フィーリングなど旋回特性を選択するように構成している。 A control structure of 5) to change the turning performance and driving performance without recombining, and configured to select the turning characteristic such insensitive turning feeling or agile turning feeling.

【0045】また、減速出力軸(178)からの減速入力と別の直結出力軸(179)からの変速操作入力を選択するフィーリング切換部材であるフィーリングレバー(195)を設け、減速出力軸(178)を用いた変速制御と直結出力軸(179)を用いた変速制御の切換をフィーリングレバー(195)の操作によって行い、操舵機能の向上並びに取扱い操作の簡略化などを図ると共に、減速出力軸(178)からの減速入力と別の直結出力軸(179)からの変速操作入力を同一軸芯上で選択していずれかの入力によって変速部材(25)を制御し、主変速レバー(73)及び操向ハンドル(19)及び変速部材(25)の間の連結機構の簡略化及びコンパクト化を行い、組立及び調整など作業性の向上を図るように構成している。 Further, the feeling lever (195) provided a feeling switching member for selecting a speed change operation input from the deceleration input to another direct output shaft of the reduction gear output shaft (178) (179), the deceleration output shaft perform (178) the shift control and the direct output shaft with the switching of the shift control using the (179) by operating the feeling lever (195), there is ensured and simplification of improving and handling operation of the steering function, reduction and controlling the gear member (25) either by inputting the speed change operation input from the deceleration input to another direct output shaft from the output shaft (178) (179) was selected on the same axis center, the main shift lever ( 73) and performs a simplified and compact coupling mechanism between the steering wheel (19) and a transmission member (25), it is configured so as to improve the workability such as assembling and adjustment.

【0046】さらに、図25、図26、図27に示す如く、主変速レバー(73)手動操作によって切換える電動変速モータ(196)を設け、前記主変速レバー(7 [0046] Further, FIGS. 25, 26, as shown in FIG. 27, an electric shift motor (196) provided for switching the main shift lever (73) manually operated, the main speed change lever (7
3)を操作して変速モータ(196)を作動させて第1 3) Operation to the by operating the shift motor (196) first
油圧ポンプ(23)の斜板角度を変更させ、第1油圧モータ(24)の出力軸(31)の回転数を無段階に変化させたり、逆転させる前後進切換動作を行わせ、主変速レバー(73)の操作量に比例させて第1油圧モータ(24)の回転数を変更させると共に、前記操向ハンドル(19)手動操作によって切換える電動操向モータ(197)と、操向ハンドル(19)の直進操作並びに副変速機構(32)中立切換によって作動させる直進バルブ(198)と、該バルブ(198)に接続させる操向クラッチシリンダ(199)を設け、前記操向ハンドル(19)を操作して操向モータ(197)を作動させて第2油圧ポンプ(26)の斜板角度を変更させ、第2 To change the swash plate angle of the hydraulic pump (23), the output shaft of the first hydraulic motor (24) the rotational speed of (31) or is varied continuously, to perform the reverse switching operation before reversing, main shift lever with changing the rotational speed of the in proportion to the operation amount of the (73) first hydraulic motor (24), and the steering handle (19) the electric steering motor switched by a manual operation (197), the steering wheel (19 straight operation and subtransmission mechanism) (32) operation and straight valve actuated by a neutral switch (198) is provided with a steering clutch cylinder (199) to be connected to the valve (198), said steering handle (19) swash plate angle is changed in the second hydraulic pump is actuated (26) the steering motor (197) and, second
油圧モータ(27)の出力回転数を無段階に変化させたり、逆転させる左右操向動作を行わせ、走行方向を左右に変更して圃場枕地で方向転換したり進路を修正するもので、操向ハンドル(19)の操作量に比例させて操向モータ(27)の回転数を変更させると共に、前記操向ハンドル(19)の直進操作並びに副変速機構(32) The output speed or varied in a stepless hydraulic motor (27), to perform the right and left steering operation of reversing, by changing the direction of travel to the right and left as to modify the route or turning in the field pillow areas, in proportion to the operation amount of the steering wheel (19) with changing the rotational speed of the steering motor (27), the straight operation and the auxiliary transmission mechanism of the steering handle (19) (32)
の中立操作によって直進バルブ(198)が自動的に切換わり、操向クラッチシリンダ(199)を作動させて操向出力クラッチ(62)を切にして第2油圧モータ(27)の出力を中止し、操向駆動を中止させるように構成している。 Straight valve (198) is automatically switched by the neutral operation, by operating the steering clutch cylinder (199) stops the output of the second hydraulic motor and earnestly steering output clutch (62) (27) , it is configured so as to stop the steering drive.

【0047】また、前記操向入力軸(87)に操向出力アーム(220)の一端を固定させ、操向ハンドル(1 Further, one end is fixed in the steering output arm (220) to said steering input shaft (87), the steering wheel (1
9)を直進位置に戻す左右一対の直進バネ(221) A pair of right and left straight springs back 9) to the straight-ahead position (221)
(221)と、前記バネ(221)に抗して操向ハンドル(19)の回転速度を遅くする戻り抵抗アブソーバ(222)を、前記出力アーム(220)に連結させ、 And (221), said spring steering handle against the (221) slow to return resistor absorber rotational speed of (19) (222), it is connected to the output arm (220),
操向ハンドル(19)を左右に回転させる手動操作を行ったとき、ハンドル(19)から作業者が手を離すことにより、ハンドル(19)を緩やかに直進位置に自動的に戻し、作業者によるハンドル(19)直進戻し操作を省くと共に、スライドポテンショメータ型操向角度センサ(223)を前記出力アーム(220)に連結させ、 When performing a manual operation of rotating the steering wheel (19) to the left and right, by an operator from the handle (19) releases the hand, automatically returns a handle (19) to gently straight-ahead position, by the operator handle (19) with omitting the straight return operation, sliding potentiometer type steering angle sensor (223) is connected to the output arm (220),
操向ハンドル(19)の操向操作量を操向角度センサ(223)によって検出させると共に、前記主変速レバー(73)の変速操作位置及び中立位置及び前後進切換動作を検出するポテンショメータ型主変速センサ(22 The steering operation amount of the steering wheel (19) causes detected by the steering angle sensor (223), said main speed change lever (73) shift operating position and a neutral position and the forward-reverse switching operation potentiometer type main gear to detect the sensor (22
4)と、前記副変速レバー(74)の変速操作位置及び中立位置を検出するポテンショメータ型副変速センサ(225)と、運転席(20)の作業者が切換えるステアリングコラム(71)上面の撮形手元操作部材(22 And 4), the potentiometer type auxiliary transmission sensor for detecting the speed change operation position and the neutral position of the sub shift lever (74) (225), the steering column (71) top surface a worker switches the driver's seat (20) Tokatachi hand operation member (22
6)の操作によって操向ハンドル(19)の切れ角増大に対する車速の減速比を変更させるボリューム形旋回フィーリング設定器(227)と、前記直進センサ(16 Volume shaped to change the speed reduction ratio of the vehicle speed with respect to the steering angle increase of the steering wheel by the operation of 6) (19) turning Feeling setter and (227), said rectilinear sensor (16
5)を、マイクロコンピュータで形成する変速操向コントローラ(228)に入力接続させる。 5), and inputs connected to the transmission steering controller to form a microcomputer (228).

【0048】さらに、前記変速モータ(196)を正転または逆転させる増速及び減速回路(229)(23 [0048] Further, the speed increasing and reduction circuit (229) to forward or reverse the shift motor (196) (23
0)を前記コントローラ(228)に接続させ、主変速レバー(73)操作量(操作角度)に対して変速モータ(196)による第1油圧ポンプ(23)の斜板角を略正比例させて変化させ、主変速レバー(73)の傾き操作に応じた車速を得ると共に、前記操向モータ(19 0) is connected to said controller (228) to vary substantially by directly proportional to the swash plate angle of the first hydraulic pump by the shift motor (196) (23) relative to the main shift lever (73) manipulated variable (operation angle) It is, together with obtaining a vehicle speed corresponding to the tilt operation of the main shift lever (73), the steering motor (19
7)を正転または逆転させる左右旋回回路(231) Left and right pivot circuit for forward or reverse 7) (231)
(232)を前記コントローラ(228)に接続させ、 (232) said to be connected to the controller (228), and
操向ハンドル(19)の操向操作量(左右回転角度)に対して操向モータ(197)による第2油圧ポンプ(2 Steering operation amount of the steering wheel (19) (left-right rotation angle) second hydraulic pump by steering motor (197) with respect to (2
6)の斜板を略正比例させて変化させ、また図28の旋回出力線図に示す如く、主変速レバー(73)の前進操作時と後進操作時とでは、操向ハンドル(19)の左右回転に対して左右旋回出力を逆にし、前進時と後進時とで逆ハンドルになるのを防ぎ、四輪自動車と同じ操向動作を行わせて前後進させる。 Swash plate substantially by direct proportion to change the 6), also as shown in swirl output diagram of Figure 28, at the time of forward operation of the main shift lever (73) and during reverse operation, the left and right of the steering wheel (19) to reverse the left and right turning output with respect to the rotation, it prevents the reversed handle during forward and reverse time, to reverse pre-made to perform the same steering operation as a four-wheeled vehicle. また、主変速レバー(7 In addition, the main shift lever (7
3)が中立のときは、第2油圧ポンプ(26)の斜板角を零に保ち、第2油圧モータ(27)の出力を停止維持し、主変速中立状態下でのハンドル(19)操作による旋回動作を阻止すると共に、操向ハンドル(19)切れ角に応じて大きくなる第2油圧ポンプ(26)の斜板角の絶対値を主変速レバー(73)操作角度の絶対値と比例するように制御し、操向ハンドル(19)切れ角が一定のときに車速を変化させても旋回半径を一定に保ち、 3) is at neutral, the swash plate angle of the second hydraulic pump (26) maintained at zero, the output of the second hydraulic motor (27) stops maintain the handle under the main transmission neutral condition (19) Operation with blocking pivoting operation by proportional to the absolute value of the main shift lever (73) operating angle of the swash plate angle of the second hydraulic pump increases in accordance with the steering wheel (19) steering angle (26) controlled so as, even the steering wheel (19) turning angle is changing the vehicle speed when the constant maintaining the turning radius to be constant,
四輪自動車と同じ操向動作で旋回させる。 Pivoting the same steering operation as a four-wheeled vehicle. また、直進バルブ(234)を切換えて操向クラッチシリンダ(19 Also, steering switches the straight valve (234) toward the clutch cylinder (19
9)を作動させる直進回路(233)を前記コントローラ(228)に接続させ、副変速中立またはハンドル(19)直進によって操向出力を自動的に停止させる。 9) straight circuit for operating the (233) to connect the controller (228) and auxiliary transmission neutral or handle (19) automatically stops the steering output by straight.

【0049】さらに、図29、図30の車速出力線図に示す如く、操向ハンドル(19)の切れ角の増大に伴い、主変速レバー(73)変速位置で決定される車速を減速させるもので、主変速レバー(73)を一定位置に保ち乍らハンドル(19)切れ角に比例させて減速させ、ハンドル(19)を直進に戻すだけでレバー(7 [0049] Further, FIG. 29, as shown in the vehicle speed output line of FIG 30, which with increasing steering angle of the steering wheel (19), decelerating the vehicle speed determined by the main shift lever (73) shift position in, the main shift lever (73) in proportion to the notwithstanding et handle (19) turning angle held constant position is decelerated, only lever returns a handle (19) to straight (7
3)速度に自動的に戻ると共に、ハンドル(19)最大切り角でスピンターン速度に減速され、またハンドル(19)の直進を中心とする不感帯(約15度の回転角度)でレバー(73)速度を保たせ、収穫作業中に未刈り穀稈列に沿わせる条合せ(進路修正)のための操向操作を行っても、走行速度が減速されたり増速されて収穫作業途中に走行速度が不均一に変化するのを防ぎ、作業者の運転感覚とコンバインの走行動作との間にずれが生じることなく適正な操向操作を行わせると共に、手元操作部材(226)を用いた作業者の手動切換により、図30のように、鋭敏な旋回、通常間旋回、滑らかな旋回となるように減速比を変化させる制御を前記部材(22 3) automatically with return to speed, the handle (19) is decelerated to spin turn speed up cutting angle, also lever handle (rotation angle of the dead band (approximately 15 degrees around the straight 19)) (73) was kept speed, running speed during harvesting even if the steering operation, the traveling speed is accelerated or decelerated by the for the strip together be along the non-cutting grain 稈列 during harvesting (route modification) worker but it prevents changes unevenly, with to perform proper steering operation without deviation occurs between the driving operation of the driving feeling and the combine operator, using hand manipulation member (226) the manual switching, as shown in FIG. 30, sharp turns, usually between pivot, the member control to change the speed reduction ratio so that the smooth pivoting (22
6)の手動によって行わせ、作業内容、圃場条件、作物状況などに適応させた旋回性能を得る。 Was carried out by manual 6) to obtain work, field conditions, the turning performance which is adapted such crop conditions.

【0050】さらに、図31の旋回出力線図に示す如く、前記主変速レバー(73)の操作角度を検出する主変速センサ(224)入力に対し、操向角度センサ(2 [0050] Further, as shown in swirl output diagram in Figure 31, relative to the main speed change lever (73) operating angle of the main speed change sensor (224) input to the detection of a steering angle sensor (2
23)に基づきコントローラ(228)から出力される操向モータ(197)制御出力を二次曲線形に変化させ、容積効率が低い第2油圧ポンプ(26)の斜板の小さいときに車速が遅くても操向ハンドル(19)を少し切るだけで斜板を大きく変化させ、第2油圧ポンプ(2 23) steering motor output from the controller (228) based on the (197) changes the control output in quadratic form, slow speed when small swash plate of the second hydraulic pump is low volumetric efficiency (26) greatly changing the swash plate just cut a little steering wheel (19) also, the second hydraulic pump (2
6)及び油圧モータ(27)の特性を電気的に補正して遅い車速であっても敏感に操向モータ(197)により第2油圧ポンプ(26)を旋回制御し、主変速レバー(73)の変速全域で操向ハンドル(19)の切れ角に対して走行クローラ(2)の旋回半径を略同一に保つもので、主変速レバー(73)が高速のときよりも低速のときの操向ハンドル(19)操作量に対する第2油圧ポンプ(26)制御量の割合を大きくし、第2油圧ポンプ(26)出力が低効率になる低速域で車速が遅いときであっても操向ハンドル(19)の少量操作によって適正な旋回動作を行わせ、操向ハンドル(19)の操作量と走行クローラ(2)の旋回半径を一致させる操向操作性及び操向機能の向上を図ると共に、主変速レバー(7 6) and the hydraulic motor (27) characteristic electrically corrected the second hydraulic pump (26) and the turning control by steering motor sensitive even slower speed (197) of the main speed change lever (73) steering when the slower than when the turning radius of the traveling crawlers (2) relative to the turning angle of the steering wheel (19) to keep it at a substantially identical speed throughout, main shift lever (73) is high handle (19) the ratio of the second hydraulic pump (26) control amount is increased with respect to the operation amount, a second hydraulic pump (26) outputs a low speed range the steering wheel even when the vehicle speed is slow in that efficiency is low ( 19) to perform the proper turning operation with a small amount operation, together with improved steering handle (19) of an operation amount and the running crawlers (2) of the turning steering operability and steering function of radius is coincident, the main shift lever (7
3)の中立を主変速センサ(224)によって検出して第2油圧ポンプ(26)を中立に維持させ、停止時の走行クローラ(2)の旋回動作を阻止し乍ら低速域の旋回性能を向上させ、操向ハンドル(19)の操作性向上並びに運転操作の簡略化などを図る。 The neutral 3) Neutral to maintain the second hydraulic pump is detected (26) by a main speed change sensor (224), the turning performance of preventing the turning operation of the travel crawler at stop (2) 乍Ra low speed range enhance, promote and simplify the operability improved and driving operation of the steering wheel (19).

【0051】さらに、図32の旋回出力線図に示す如く、操向ハンドル(19)の切れ角を検出する操向角度センサ(223)入力に対し、直進位置を基準にしてハンドル(19)切れ角が小さい(約0〜10度の範囲) [0051] Further, as shown in swirl output diagram of Figure 32, with respect to the steering angle sensor (223) input for detecting a turn angle, with respect to the straight-ahead position handle (19) out of the steering wheel (19) the corner is small (in the range of about 0 to 10 degrees)
ときにコントローラ(228)から出力させる操向モータ(197)制御出力を大きく変化させ、ハンドル(1 Significantly alter the controller steering motor (197) to be outputted from the (228) control output when the handle (1
9)切れ角が大きい(約10〜70度の範囲)ときにコントローラ(228)から出力させる操向モータ(19 Steering motor to output from the controller (228) when 9) steering angle is large (in the range of about 10 to 70 degrees) (19
7)制御出力を小さく変化させ、第2油圧ポンプ(2 7) Control output decreased by changing the second hydraulic pump (2
6)及びモータ(27)の特性を電気的に補正して小さい切れ角のときにハンドル(19)操作に対して操向モータ(197)制御を敏感にし、低効率となる低出力域での第2油圧ポンプ(26)及びモータ(27)による走行クローラ(2)旋回を機敏に行わせるもので、操向ハンドル(19)の切れ角度が小さいときに操向制御出力の変化を大きくし、畦または作物列に走行進路を一致させる条合せ等の微少進路修正を行わせ、農作業中の直進走行時の操向性能の向上などを図るもので、直進作業時の進路修正を適正に行い、また操向ハンドル(19) 6) and sensitive steering motor (197) controlled relative to the handle (19) operated when the electrically corrected to a small turning angle of the characteristics of the motor (27), in the low output range as a low efficiency one which agile performed traveling crawlers (2) pivoting the second hydraulic pump (26) and the motor (27), by increasing the change of the steering control output when cutting angle of the steering wheel (19) is small, to perform a minute course correction of conditions combined such that match the travel route to the ridge or crop rows, intended to achieve and improving steering performance during straight running in the farm, properly perform route modification during straight work, The steering wheel (19)
の誤操作による過剰進路修正を防止し、高速走行での方向転換などを安定良く行わせると共に、操向ハンドル(19)の操作量に対して第2油圧ポンプ(26)の制御出力を非直線的に変化させ、第2油圧ポンプ(26) Erroneous operation preventing excessive path correction by a, and turning with causing good stability at high speed running, non-linear control output of the second hydraulic pump to the operation amount of the steering wheel (19) (26) It is changed to the second hydraulic pump (26)
の特性または農作業内容などに適応させた操向動作を設定し、操向機能並びに取扱い操作性の向上などを図る。 Properties or to set the steering operation adapted for such agricultural contents, achieving such steering function and improved handling operability.

【0052】上記から明らかなように、走行変速レバーである主変速レバー(73)の操作によって走行速度を無段階に変更自在な変速部材(25)を介して左右走行クローラ(2)に駆動力を伝えると共に、操向ハンドル(19)によって操向部材(28)を操作して左右走行クローラ(2)の駆動速度の差を無段階に変化させる移動農機において、主変速レバー(73)操作量によって決定される車速を操向ハンドル(19)操作量に比例させて減速させると共に、操向ハンドル(19)操作量に対する車速の減速比を変更自在とし、操向ハンドル(1 [0052] As apparent from the above, the driving force speed to the left and right traveling crawlers through a freely shifting member continuously changed (25) (2) by the operation of the main shift lever is traveling shift lever (73) together they convey, in a mobile agricultural machine to steplessly vary the difference in driving speeds of the left and right traveling crawlers by operating the steering member (28) (2) by the steering wheel (19), the main shift lever (73) manipulated variable the vehicle speed is determined with slowing in proportion to the steering wheel (19) operation amount by a freely change the reduction ratio of the speed with respect to the steering wheel (19) operation amount, the steering wheel (1
9)操作量に対して車速の減速量を少なくし、滑らかな旋回フィーリングとなって湿田走行性能を向上させ、スピンターンが不要な作業での作業能率の向上並びに湿田作業での走行性能の向上などを行うもので、操向ハンドル(19)操作量に対する車速の減速比を変更させる手元操作部材(226)を設け、運転作業者または作業内容または湿田作業に適した操向動作を容易に得られ、動力損失の低減並びに操舵機能の向上などを図るように構成している。 9) to reduce the deceleration of the vehicle speed to the operation amount, and a smooth turning feeling improves Shitsuden driving performance, the running performance on improving and Shitsuden work working efficiency of the spin turn unnecessary work and it performs like increase, provided the steering wheel (19) hand operation member for changing the reduction ratio of the speed with respect to the operation amount (226), a steering operation suitable for the driver operator or the work content or Shitsuden work easily obtained, it is configured to achieve such improvement in reducing and steering functions of the power loss.

【0053】また、主変速レバー(73)の操作量を検出して変速部材(25)を出力制御する変速アクチュエータである変速モータ(196)を設け、主変速レバー(73)及び変速部材(25)の取付け及び制御構造の簡略化並びに保守及び調整など取扱い操作性の向上などを行うと共に、操向ハンドル(19)の操作量を検出して操向部材(28)を出力制御する操向アクチュエータである操向モータ(197)を設け、操向ハンドル(1 [0053] Further, the main shift lever (73) of the operating amount detected and provided a speed change motor is a lever actuator that outputs controlling the gear member (25) (196), the main shift lever (73) and a transmission member (25 installation and simplification of the control structure and the maintenance and adjustment performs such improved handling operability such as a steering actuator for outputting control steering member (28) by detecting the operation amount of the steering wheel (19) of) provided steering motor (197) is, the steering wheel (1
9)及び操向部材(28)の取付け及び制御構造の簡略化並びに保守及び調整など取扱い操作性の向上などを行うように構成している。 9) and steering member (28) is configured to perform such attachment and simplification of the control structure and maintenance and adjustment and improvement of the handling operability.

【0054】そして、図33のフローチャートに示す如く、主変速センサ(224)、副変速センサ(22 [0054] Then, as shown in the flowchart of FIG. 33, the main shift sensor (224), auxiliary transmission sensor (22
5)、操向角度センサ(223)、フィーリング設定器(227)、直進センサ(165)からコントローラ(228)に入力させる。 5), the steering angle sensor (223), Feeling setter (227), and inputs from the straight sensor (165) to the controller (228). また、副変速レバー(74) In addition, the sub-transmission lever (74)
が中立のときに旋回出力切制御を行って操向出力クラッチ(62)を切にして第2油圧モータ(27)を中止させると共に、主変速レバー(73)が中立のときに旋回出力切制御を行う一方、操向ハンドル(19)が直進位置のとき、操向出力クラッチ(62)切制御によって第2油圧モータ(27)の出力を中止させる。 Sincerely to with stops the second hydraulic motor (27), the main shift lever (73) is turning the output switching control when a neutral but the steering output clutch performs the turning output switching control when the neutral (62) while performing, when the steering wheel (19) of the rectilinear position, stops the output of the steering output clutch (62) second hydraulic motor by the switching control (27). また、副変速が中速または低速で、主変速が中立以外で、操向ハンドル(19)が直進以外に操作されることにより、主変速センサ(224)入力と操向角度センサ(223)入力によって主変速減速量及び操舵量及び操向方向が演算されて決定され、主変速及び操向制御によって変速モータ(196)及び操向モータ(197)を作動させ、左右走行クローラ(2)(2)の駆動速度を変更して条合せ進路修正並びに圃場枕地でのスピンターンによる方向転換などを行い、連続的に穀稈を刈取って脱穀する収穫作業を行うもので、操向ハンドル(19)操作角度に応じて減速される車速の最終速度を手元操作部材(22 The sub speed change speed or at low speed medium, the main transmission is non-neutral, by steering wheel (19) is operated in addition to straight, main shift sensor (224) inputs and steering angle sensor (223) Input main transmission deceleration amount and the steering amount and a steering direction is determined being calculated by the main gear and actuates the shift motor (196) and steering motor (197) by the steering control, the right and left travel crawlers (2) (2 perform such direction change by spin turn in by changing the drive speed conditions combined course modifications and fields pillow locations), and performs harvest to threshing continuously harvests culms, steering handle (19 ) proximal operating member the final speed of the vehicle speed is decelerated in response to the operation angle (22
6)のフィーリング設定器(227)操作によって無段階に変更させ、例えば路上走行または乾田作業において、ハンドル(19)操作量に対して車速減速量を大きくすると、敏感な旋回が可能になり、また車速減速量を減らすことによって滑らかな旋回フィーリングになると共に、湿田作業またはスピンターンが不要なときに車速減速量を減らすと、湿田走行性能が向上し、またハンドル(19)を大きく操作してもスピンターンによる急旋回が防止される。 Feeling setter 6) (227) is changed steplessly by operation, for example in road or dry paddy field operations, increasing the speed reduction amount with respect to the handle (19) operation amount enables sensitive pivoting, also with a smooth turning feeling by reducing the vehicle speed deceleration amount, the Shitsuden work or spin turn reduces the vehicle speed deceleration amount when not needed, improves Shitsuden driving performance is also increased by operating the handle (19) sharp turn is prevented by the spin turn also.

【0055】さらに、図34に示す如く、車速を操向ハンドル(19)角度によって減速させる減速時と減速させない不減速時とを、フィーリングレバー(195)または手元操作部材(226)によって切換選択するもので、操向ハンドル(19)最大角度で旋回内側の走行クローラ(2)を逆転させるスピンターン旋回走行と、操向ハンドル(19)の最大操作量で旋回内側の走行クローラ(2)の回転方向を外側走行クローラ(2)と同一方向に維持する非スピンターン旋回走行を、選択切換自在とし、スピンターン旋回走行の選択によって路上または乾田などでの旋回を機敏に行わせ、また非スピンターン旋回走行の選択によって湿田または泥土面などでの旋回性能を向上させ、旋回特性の切換によって操舵機能の向上並びに取扱い [0055] Further, as shown in FIG. 34, switching select and when not deceleration that does not decelerate the deceleration to decelerate the steering wheel (19) angle speed, the feeling lever (195) or hand operating member (226) It intended to, and spin turn turning reversing the steering wheel (19) maximum angle in the turning inner travel crawlers (2), the traveling crawlers inner side of the turning at the maximum operation amount of the steering wheel (19) of (2) non spin turn turning to keep the direction of rotation in the same direction as the outer traveling crawlers (2), and freely select switch causes agile performed the turning of the like streets or dry paddy field by selecting a spin turn turning, also non-spin by selection of the turn cornering to improve the turning performance on such Shitsuden or mud surface, improved and handling of the steering function by the switching of the turning characteristic 作性の向上などを図るように構成している。 It is configured to achieve, such as improvement of the work of.

【0056】 [0056]

【発明の効果】以上実施例から明らかなように本発明は、走行変速レバー(73)の操作によって走行速度を無段階に変更自在な変速部材(25)を介して左右走行クローラ(2)に駆動力を伝えると共に、操向ハンドル(19)によって操向部材(28)を操作して左右走行クローラ(2)の駆動速度の差を無段階に変化させる移動農機において、操向ハンドル(19)の操作量に比例させて車速を減速させる協動系路(178)を介して走行変速レバー(73)に変速部材(25)を連結させると共に、前記協動系路(178)と別の第三系路(17 The present invention, as is clear from the above examples according to the present invention is the running speed by operation of the travel gear lever (73) to the left and right traveling crawlers (2) through a universal gear shift member continuously changed (25) with transmitting the driving force, in the mobile agricultural machine to steplessly vary the difference in driving speeds of the left and right traveling crawlers by operating the steering member (28) by the steering wheel (19) (2), the steering wheel (19) the operation amount in proportion with linking the shift member (25) to the traveling shift lever (73) through the cooperation pathway decelerating (178) the vehicle speed, the cooperation system path and (178) of another three pathways (17
9)で走行変速レバー(73)に変速部材(25)を連結させたもので、前記協動系路(178)と第三系路(179)を使い分けることによって変速部材(25) Travel gear lever 9) (73) to the one obtained by connecting a shift member (25), said cooperating pathways (178) and the transmission member by selectively Tertiary path (179) (25)
の制御構造を組み換えることなく旋回性能及び走行性能を変更でき、鈍感な旋回フィーリングまたは機敏な旋回フィーリングなど旋回特性を容易に選択できるものである。 Control structure of the change the turning performance and driving performance without recombining, in which the turning characteristic such insensitive turning feeling or agile turning feeling can be readily selected.

【0057】また、協動系路(178)からの減速入力と別の第三系路(179)からの変速操作入力を選択するフィーリング切換部材(195)を設けたもので、協動系路(178)を用いた変速制御と第三系路(17 [0057] Further, those having a feeling switching member (195) for selecting a shift operation input from the deceleration input and another third pathway from the cooperating pathways (178) (179), cooperating system shift control and tertiary path using the road (178) (17
9)を用いた変速制御の切換をフィーリング切換部材(195)の操作によって容易に行うことができ、操舵機能の向上並びに取扱い操作の簡略化などを容易に図ることができるものである。 Switching the speed change control using the 9) can be easily performed by operating the feeling switching member (195), in which the like simplification of improving and handling operation of the steering function can be easily achieved.

【0058】また、協動系路(178)からの減速入力と別の第三系路(179)からの変速操作入力を同一軸芯上で選択していずれかの入力によって変速部材(2 [0058] In addition, the speed change by the selection to one input of the shift operation input from the deceleration input and another third pathway from the cooperating pathways (178) (179) on the same axis core member (2
5)を制御するように構成したもので、走行変速レバー(73)及び操向ハンドル(19)及び変速部材(2 5) which was configured to control the traveling speed change lever (73) and steering wheel (19) and a transmission member (2
5)の間の連結機構の簡略化及びコンパクト化を容易に行うことができ、組立及び調整など作業性の向上を容易に図ることができるものである。 5) The simplified and compact coupling mechanism can be easily performed between the one in which an improvement in workability and assembly and adjustment can be easily achieved.

【0059】また、旋回内側の走行クローラ(2)を逆転させるスピンターン旋回走行と、操向ハンドル(1 [0059] Further, the spin turn turning reversing the travel crawler inner side of the turning (2), the steering wheel (1
9)の最大操作量で旋回内側の走行クローラ(2)の回転方向を外側走行クローラ(2)と同一方向に維持する非スピンターン旋回走行を、選択切換自在としたもので、スピンターン旋回走行の選択によって路上または乾田などでの旋回を機敏に行わせることができ、また非スピンターン旋回走行の選択によって湿田または泥土面などでの旋回性能を向上させることができ、旋回特性の切換によって操舵機能の向上並びに取扱い操作性の向上などを容易に図ることができるものである。 The maximum operation amount in a non-spin turn turning to maintain the same direction of rotation direction of the outer traveling crawlers (2) of the traveling crawler inner side of the turning (2) 9), in which the freely selection switching, spin turn turning of can be nimbly performed the turning of the like streets or dry paddy field by selecting, also can improve the turning performance on such Shitsuden or mud surface by selection of the non-spin-turn traveling, steered by switching turning characteristic improved as well as improvement of the handling operations of the functional is that it is possible to easily realized like.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】コンバインの全体側面図。 FIG. 1 is a side view of the entire combine.

【図2】コンバインの全体平面図。 FIG. 2 is a plan view showing the entirety of the combine.

【図3】ミッション駆動系の説明図。 FIG. 3 is an explanatory diagram of a mission drive system.

【図4】走行変速及び操向操作部の説明斜視図。 [4] Description perspective view of the traveling speed and steering operation unit.

【図5】同部の作動説明図。 FIG. 5 is a working explanatory view of the department.

【図6】ステアリングコラムの側面図。 FIG. 6 is a side view of the steering column.

【図7】同上部拡大側面図。 [7] the upper enlarged side view.

【図8】同下部拡大側面図。 [8] the lower part enlarged side view.

【図9】ステアリングコラムの正面図。 FIG. 9 is a front view of the steering column.

【図10】同上部拡大正面図。 FIG. 10 is the upper enlarged front view.

【図11】同下部拡大正面図。 [11] the lower part enlarged front view.

【図12】図4の平面説明図。 Figure 12 is a plan explanatory view of Fig.

【図13】同拡大図。 [13] the same enlarged view.

【図14】ステアリングコラム横断面図。 [14] steering column cross-sectional view.

【図15】設定操作説明図。 [15] setting operation illustration.

【図16】ステアリングコラム上部の部分平面図。 FIG. 16 is a partial plan view of the steering column top.

【図17】同部分図。 FIG. 17 is the same partial view.

【図18】図16の作動説明図。 [18] working explanatory view of FIG. 16.

【図19】変速部材作動説明図。 [19] transmission member operating diagram.

【図20】主変速動作説明図。 FIG. 20 is a main transmission operation explanatory diagram.

【図21】操向動作説明図。 [21] The steering operation explanatory diagram.

【図22】主変速と操向ハンドル操作を示す線図。 [Figure 22] diagram showing a main transmission and a steering handle operation.

【図23】走行変速出力切換部の正面説明図。 Figure 23 is a front explanatory view of a travel gear output switching section.

【図24】同部の部分説明図。 FIG. 24 is a partial illustration of the department.

【図25】変速及び操向駆動説明図。 [Figure 25] speed and steering drive illustration.

【図26】操向ハンドル部の平面説明図。 Figure 26 is a plan explanatory view of the steering wheel unit.

【図27】変速及び操向制御回路図。 [27] speed and steering control circuit diagram.

【図28】操向ハンドルと旋回出力を示す線図。 [Figure 28] diagram showing a turning output steering handle.

【図29】操向ハンドルと変速出力を示す線図。 [Figure 29] diagram showing a a steering handle transmission output.

【図30】操向ハンドルと変速出力を示す線図。 [Figure 30] diagram showing a a steering handle transmission output.

【図31】主変速レバーと旋回出力を示す線図。 [Figure 31] diagram showing a turning output main shift lever.

【図32】操向ハンドルと旋回出力を示す線図。 [Figure 32] diagram showing a turning output steering handle.

【図33】図7の変速操向制御フローチャート。 Shift steering control flowchart of FIG. 33 FIG.

【図34】走行クローラ旋回出力線図。 [Figure 34] traveling crawler pivot output diagram.

【符号の説明】 DESCRIPTION OF SYMBOLS

(2) 走行クローラ (19) 操向ハンドル (25) 変速部材 (28) 操向部材 (73) 主変速レバー(走行変速レバー) (178) 減速出力軸(協動系路) (179) 直結出力軸(第三系路) (195) フィーリングレバー(フィーリング切換部材) (2) Travel crawler (19) the steering wheel (25) speed change member (28) steering member (73) main shift lever (travel gear lever) (178) reduction output shaft (cooperating pathways) (179) directly connected Output axis (tertiary path) (195) feeling lever (feeling switching member)

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl. 7識別記号 FI G05G 11/00 G05G 11/00 (58)調査した分野(Int.Cl. 7 ,DB名) A01D 69/00 A01B 69/00 B62D 11/08 G05G 11/00 ────────────────────────────────────────────────── ─── of the front page continued (51) Int.Cl. 7 identification mark FI G05G 11/00 G05G 11/00 (58) investigated the field (Int.Cl. 7, DB name) A01D 69/00 A01B 69/00 B62D 11/08 G05G 11/00

Claims (4)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】 走行変速レバーの操作によって走行速度を無段階に変更自在な変速部材を介して左右走行クローラに駆動力を伝えると共に、操向ハンドルによって操向部材を操作して左右走行クローラの駆動速度の差を無段階に変化させる移動農機において、操向ハンドルの操作量に比例させて車速を減速させる協動系路を介して走行変速レバーに変速部材を連結させると共に、前記協動系路と別の第三系路で走行変速レバーに変速部材を連結させたことを特徴とする移動農機。 With 1. A transmitting driving force to the traveling speed to the left and right traveling crawlers through a freely shifting member continuously changed by the operation of the travel gear lever, the right and left traveling crawlers by operating the steering member by a steering wheel in mobile agricultural machine for changing the difference in driving speed steplessly, along with linking the shift member to the traveling shift lever through the cooperation system path in proportion to the operation amount of the steering wheel to decelerate the vehicle speed, the cooperating system mobile agricultural machine is characterized in that by connecting the shift member to the traveling shift lever in the third pathway road and another.
  2. 【請求項2】 協動系路からの減速入力と別の第三系路からの変速操作入力を選択するフィーリング切換部材を設けたことを特徴とする請求項1に記載の移動農機。 2. A mobile agricultural machine as claimed in claim 1, characterized in that a feeling switching member for selecting a speed change operation input from the third pathway deceleration input and another from the cooperating pathways.
  3. 【請求項3】 協動系路からの減速入力と別の第三系路からの変速操作入力を同一軸芯上で選択していずれかの入力によって変速部材を制御するように構成したことを特徴とする請求項1に記載の移動農機。 The wherein the shift operation input from the third pathway deceleration input and another from the cooperating pathways and configured to control the transmission member either by selectively inputs on the same axis core mobile agricultural machine according to claim 1, wherein.
  4. 【請求項4】 旋回内側の走行クローラを逆転させるスピンターン旋回走行と、操向ハンドルの最大操作量で旋回内側の走行クローラの回転方向を外側走行クローラと同一方向に維持する非スピンターン旋回走行を、選択切換自在としたことを特徴とする請求項1に記載の移動農機。 4. A spin turn turning reversing the travel crawler inner side of the turning, non spin turn turning maintaining the rotation direction of the turning inner running crawler outward travel crawler in the same direction at the maximum operation amount of the steering wheel the mobile agricultural machine according to claim 1, characterized in that the freely selected switching.
JP10357368A 1998-12-16 1998-12-16 Moving agricultural machinery Expired - Lifetime JP3028482B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
JP10357368A JP3028482B1 (en) 1998-12-16 1998-12-16 Moving agricultural machinery
JP16627099A JP4065359B2 (en) 1998-12-16 1999-06-14 Mobile farm machine

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JP3395061B2 (en) 2000-02-21 2003-04-07 学校法人金沢工業大学 Library collection automatic teller system and the library collection teller robot as well as the library collection teller robot hand mechanism
JP5152969B2 (en) 2007-12-19 2013-02-27 ヤンマー株式会社 Traveling vehicle
JP5270933B2 (en) * 2008-03-04 2013-08-21 ヤンマー株式会社 Traveling vehicle
JP5324809B2 (en) * 2008-04-01 2013-10-23 ヤンマー株式会社 Traveling vehicle
JP5285321B2 (en) * 2008-04-16 2013-09-11 ヤンマー株式会社 Traveling vehicle

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